diff --git a/src/pocketmine/Player.php b/src/pocketmine/Player.php
index 005a335b8..9654c7144 100644
--- a/src/pocketmine/Player.php
+++ b/src/pocketmine/Player.php
@@ -81,7 +81,7 @@ use pocketmine\inventory\ShapelessRecipe;
 use pocketmine\inventory\SimpleTransactionGroup;
 use pocketmine\item\Item;
 use pocketmine\level\ChunkLoader;
-use pocketmine\level\format\FullChunk;
+use pocketmine\level\format\Chunk;
 use pocketmine\level\Level;
 use pocketmine\level\Location;
 use pocketmine\level\Position;
@@ -3540,17 +3540,17 @@ class Player extends Human implements CommandSender, InventoryHolder, ChunkLoade
 		$this->server->getPlayerMetadata()->removeMetadata($this, $metadataKey, $plugin);
 	}
 
-	public function onChunkChanged(FullChunk $chunk){
+	public function onChunkChanged(Chunk $chunk){
 		$this->loadQueue[Level::chunkHash($chunk->getX(), $chunk->getZ())] = abs(($this->x >> 4) - $chunk->getX()) + abs(($this->z >> 4) - $chunk->getZ());
 	}
 
-	public function onChunkLoaded(FullChunk $chunk){
+	public function onChunkLoaded(Chunk $chunk){
 	}
 
-	public function onChunkPopulated(FullChunk $chunk){
+	public function onChunkPopulated(Chunk $chunk){
 	}
 
-	public function onChunkUnloaded(FullChunk $chunk){
+	public function onChunkUnloaded(Chunk $chunk){
 	}
 
 	public function onBlockChanged(Vector3 $block){
diff --git a/src/pocketmine/entity/Arrow.php b/src/pocketmine/entity/Arrow.php
index b7ba3b5e2..a27015110 100644
--- a/src/pocketmine/entity/Arrow.php
+++ b/src/pocketmine/entity/Arrow.php
@@ -21,7 +21,7 @@
 
 namespace pocketmine\entity;
 
-use pocketmine\level\format\FullChunk;
+use pocketmine\level\format\Chunk;
 use pocketmine\level\particle\CriticalParticle;
 use pocketmine\nbt\tag\CompoundTag;
 use pocketmine\network\protocol\AddEntityPacket;
@@ -41,7 +41,7 @@ class Arrow extends Projectile{
 
 	protected $isCritical;
 
-	public function __construct(FullChunk $chunk, CompoundTag $nbt, Entity $shootingEntity = null, $critical = false){
+	public function __construct(Chunk $chunk, CompoundTag $nbt, Entity $shootingEntity = null, $critical = false){
 		$this->isCritical = (bool) $critical;
 		parent::__construct($chunk, $nbt, $shootingEntity);
 	}
diff --git a/src/pocketmine/entity/Entity.php b/src/pocketmine/entity/Entity.php
index 813f8ee34..5b359285c 100644
--- a/src/pocketmine/entity/Entity.php
+++ b/src/pocketmine/entity/Entity.php
@@ -35,7 +35,6 @@ use pocketmine\event\entity\EntitySpawnEvent;
 use pocketmine\event\entity\EntityTeleportEvent;
 use pocketmine\event\Timings;
 use pocketmine\level\format\Chunk;
-use pocketmine\level\format\FullChunk;
 use pocketmine\level\Level;
 use pocketmine\level\Location;
 use pocketmine\level\Position;
@@ -255,7 +254,7 @@ abstract class Entity extends Location implements Metadatable{
 	protected $isPlayer = false;
 
 
-	public function __construct(FullChunk $chunk, CompoundTag $nbt){
+	public function __construct(Chunk $chunk, CompoundTag $nbt){
 
 		assert($chunk !== null and $chunk->getProvider() !== null);
 
@@ -487,13 +486,13 @@ abstract class Entity extends Location implements Metadatable{
 
 	/**
 	 * @param int|string  $type
-	 * @param FullChunk   $chunk
+	 * @param Chunk   $chunk
 	 * @param CompoundTag $nbt
 	 * @param             $args
 	 *
 	 * @return Entity
 	 */
-	public static function createEntity($type, FullChunk $chunk, CompoundTag $nbt, ...$args){
+	public static function createEntity($type, Chunk $chunk, CompoundTag $nbt, ...$args){
 		if(isset(self::$knownEntities[$type])){
 			$class = self::$knownEntities[$type];
 			return new $class($chunk, $nbt, ...$args);
diff --git a/src/pocketmine/entity/Projectile.php b/src/pocketmine/entity/Projectile.php
index 55a1bdd9e..bf5be20ff 100644
--- a/src/pocketmine/entity/Projectile.php
+++ b/src/pocketmine/entity/Projectile.php
@@ -26,7 +26,7 @@ use pocketmine\event\entity\EntityDamageByChildEntityEvent;
 use pocketmine\event\entity\EntityDamageByEntityEvent;
 use pocketmine\event\entity\EntityDamageEvent;
 use pocketmine\event\entity\ProjectileHitEvent;
-use pocketmine\level\format\FullChunk;
+use pocketmine\level\format\Chunk;
 use pocketmine\level\MovingObjectPosition;
 use pocketmine\math\Vector3;
 use pocketmine\nbt\tag\CompoundTag;
@@ -42,7 +42,7 @@ abstract class Projectile extends Entity{
 
 	public $hadCollision = false;
 
-	public function __construct(FullChunk $chunk, CompoundTag $nbt, Entity $shootingEntity = null){
+	public function __construct(Chunk $chunk, CompoundTag $nbt, Entity $shootingEntity = null){
 		$this->shootingEntity = $shootingEntity;
 		if($shootingEntity !== null){
 			$this->setDataProperty(self::DATA_SHOOTER_ID, self::DATA_TYPE_LONG, $shootingEntity->getId());
diff --git a/src/pocketmine/entity/Snowball.php b/src/pocketmine/entity/Snowball.php
index 40d604068..393beb558 100644
--- a/src/pocketmine/entity/Snowball.php
+++ b/src/pocketmine/entity/Snowball.php
@@ -21,7 +21,7 @@
 
 namespace pocketmine\entity;
 
-use pocketmine\level\format\FullChunk;
+use pocketmine\level\format\Chunk;
 use pocketmine\nbt\tag\CompoundTag;
 use pocketmine\network\protocol\AddEntityPacket;
 use pocketmine\Player;
@@ -36,7 +36,7 @@ class Snowball extends Projectile{
 	protected $gravity = 0.03;
 	protected $drag = 0.01;
 
-	public function __construct(FullChunk $chunk, CompoundTag $nbt, Entity $shootingEntity = null){
+	public function __construct(Chunk $chunk, CompoundTag $nbt, Entity $shootingEntity = null){
 		parent::__construct($chunk, $nbt, $shootingEntity);
 	}
 
diff --git a/src/pocketmine/event/level/ChunkEvent.php b/src/pocketmine/event/level/ChunkEvent.php
index e66dfb88f..15deb6e69 100644
--- a/src/pocketmine/event/level/ChunkEvent.php
+++ b/src/pocketmine/event/level/ChunkEvent.php
@@ -24,22 +24,22 @@
  */
 namespace pocketmine\event\level;
 
-use pocketmine\level\format\FullChunk;
+use pocketmine\level\format\Chunk;
 
 abstract class ChunkEvent extends LevelEvent{
-	/** @var FullChunk */
+	/** @var Chunk */
 	private $chunk;
 
 	/**
-	 * @param FullChunk $chunk
+	 * @param Chunk $chunk
 	 */
-	public function __construct(FullChunk $chunk){
+	public function __construct(Chunk $chunk){
 		parent::__construct($chunk->getProvider()->getLevel());
 		$this->chunk = $chunk;
 	}
 
 	/**
-	 * @return FullChunk
+	 * @return Chunk
 	 */
 	public function getChunk(){
 		return $this->chunk;
diff --git a/src/pocketmine/event/level/ChunkLoadEvent.php b/src/pocketmine/event/level/ChunkLoadEvent.php
index cfe99f8bc..a7d0eb6a2 100644
--- a/src/pocketmine/event/level/ChunkLoadEvent.php
+++ b/src/pocketmine/event/level/ChunkLoadEvent.php
@@ -21,7 +21,7 @@
 
 namespace pocketmine\event\level;
 
-use pocketmine\level\format\FullChunk;
+use pocketmine\level\format\Chunk;
 
 /**
  * Called when a Chunk is loaded
@@ -31,7 +31,7 @@ class ChunkLoadEvent extends ChunkEvent{
 
 	private $newChunk;
 
-	public function __construct(FullChunk $chunk, $newChunk){
+	public function __construct(Chunk $chunk, $newChunk){
 		parent::__construct($chunk);
 		$this->newChunk = (bool) $newChunk;
 	}
diff --git a/src/pocketmine/item/SpawnEgg.php b/src/pocketmine/item/SpawnEgg.php
index a8e56b8fb..a6727625f 100644
--- a/src/pocketmine/item/SpawnEgg.php
+++ b/src/pocketmine/item/SpawnEgg.php
@@ -24,7 +24,7 @@ namespace pocketmine\item;
 
 use pocketmine\block\Block;
 use pocketmine\entity\Entity;
-use pocketmine\level\format\FullChunk;
+use pocketmine\level\format\Chunk;
 use pocketmine\level\Level;
 use pocketmine\nbt\tag\CompoundTag;
 use pocketmine\nbt\tag\DoubleTag;
@@ -46,7 +46,7 @@ class SpawnEgg extends Item{
 		$entity = null;
 		$chunk = $level->getChunk($block->getX() >> 4, $block->getZ() >> 4);
 
-		if(!($chunk instanceof FullChunk)){
+		if(!($chunk instanceof Chunk)){
 			return false;
 		}
 
diff --git a/src/pocketmine/level/ChunkLoader.php b/src/pocketmine/level/ChunkLoader.php
index 77bd9a51f..fb19c5503 100644
--- a/src/pocketmine/level/ChunkLoader.php
+++ b/src/pocketmine/level/ChunkLoader.php
@@ -22,7 +22,7 @@
 namespace pocketmine\level;
 
 use pocketmine\block\Block;
-use pocketmine\level\format\FullChunk;
+use pocketmine\level\format\Chunk;
 use pocketmine\math\Vector3;
 
 /**
@@ -75,32 +75,32 @@ interface ChunkLoader{
 	/**
 	 * This method will be called when a Chunk is replaced by a new one
 	 *
-	 * @param FullChunk $chunk
+	 * @param Chunk $chunk
 	 */
-	public function onChunkChanged(FullChunk $chunk);
+	public function onChunkChanged(Chunk $chunk);
 
 	/**
 	 * This method will be called when a registered chunk is loaded
 	 *
-	 * @param FullChunk $chunk
+	 * @param Chunk $chunk
 	 */
-	public function onChunkLoaded(FullChunk $chunk);
+	public function onChunkLoaded(Chunk $chunk);
 
 
 	/**
 	 * This method will be called when a registered chunk is unloaded
 	 *
-	 * @param FullChunk $chunk
+	 * @param Chunk $chunk
 	 */
-	public function onChunkUnloaded(FullChunk $chunk);
+	public function onChunkUnloaded(Chunk $chunk);
 
 	/**
 	 * This method will be called when a registered chunk is populated
 	 * Usually it'll be sent with another call to onChunkChanged()
 	 *
-	 * @param FullChunk $chunk
+	 * @param Chunk $chunk
 	 */
-	public function onChunkPopulated(FullChunk $chunk);
+	public function onChunkPopulated(Chunk $chunk);
 
 	/**
 	 * This method will be called when a block changes in a registered chunk
diff --git a/src/pocketmine/level/ChunkManager.php b/src/pocketmine/level/ChunkManager.php
index aac28257d..72cd1483d 100644
--- a/src/pocketmine/level/ChunkManager.php
+++ b/src/pocketmine/level/ChunkManager.php
@@ -23,7 +23,7 @@ declare(strict_types = 1);
 
 namespace pocketmine\level;
 
-use pocketmine\level\format\FullChunk;
+use pocketmine\level\format\Chunk;
 
 interface ChunkManager{
 	/**
@@ -72,16 +72,16 @@ interface ChunkManager{
 	 * @param int $chunkX
 	 * @param int $chunkZ
 	 *
-	 * @return FullChunk|null
+	 * @return Chunk|null
 	 */
 	public function getChunk(int $chunkX, int $chunkZ);
 
 	/**
-	 * @param int       $chunkX
-	 * @param int       $chunkZ
-	 * @param FullChunk $chunk
+	 * @param int   $chunkX
+	 * @param int   $chunkZ
+	 * @param Chunk $chunk
 	 */
-	public function setChunk(int $chunkX, int $chunkZ, FullChunk $chunk = null);
+	public function setChunk(int $chunkX, int $chunkZ, Chunk $chunk = null);
 
 	/**
 	 * Gets the level seed
diff --git a/src/pocketmine/level/Level.php b/src/pocketmine/level/Level.php
index dbc760589..aa1ec0d72 100644
--- a/src/pocketmine/level/Level.php
+++ b/src/pocketmine/level/Level.php
@@ -66,7 +66,6 @@ use pocketmine\event\Timings;
 use pocketmine\inventory\InventoryHolder;
 use pocketmine\item\Item;
 use pocketmine\level\format\Chunk;
-use pocketmine\level\format\FullChunk;
 use pocketmine\level\format\generic\BaseLevelProvider;
 use pocketmine\level\format\generic\EmptyChunkSection;
 use pocketmine\level\format\LevelProvider;
@@ -184,7 +183,7 @@ class Level implements ChunkManager, Metadatable{
 
 	private $folderName;
 
-	/** @var FullChunk[]|Chunk[] */
+	/** @var Chunk[] */
 	private $chunks = [];
 
 	/** @var Vector3[][] */
@@ -209,7 +208,6 @@ class Level implements ChunkManager, Metadatable{
 	/** @var BlockMetadataStore */
 	private $blockMetadata;
 
-	private $useSections;
 	private $blockOrder;
 
 	/** @var Position */
@@ -334,7 +332,6 @@ class Level implements ChunkManager, Metadatable{
 		$this->generator = Generator::getGenerator($this->provider->getGenerator());
 
 		$this->blockOrder = $provider::getProviderOrder();
-		$this->useSections = $provider::usesChunkSection();
 
 		$this->folderName = $name;
 		$this->updateQueue = new ReversePriorityQueue();
@@ -918,44 +915,20 @@ class Level implements ChunkManager, Metadatable{
 			}
 
 
-			if($this->useSections){
-				foreach($chunk->getSections() as $section){
-					if(!($section instanceof EmptyChunkSection)){
-						$Y = $section->getY();
-						$k = mt_rand(0, 0x7fffffff);
-						for($i = 0; $i < 3; ++$i, $k >>= 10){
-							$x = $k & 0x0f;
-							$y = ($k >> 8) & 0x0f;
-							$z = ($k >> 16) & 0x0f;
-
-							$blockId = $section->getBlockId($x, $y, $z);
-							if(isset($this->randomTickBlocks[$blockId])){
-								$class = $this->randomTickBlocks[$blockId];
-								/** @var Block $block */
-								$block = new $class($section->getBlockData($x, $y, $z));
-								$block->x = $chunkX * 16 + $x;
-								$block->y = ($Y << 4) + $y;
-								$block->z = $chunkZ * 16 + $z;
-								$block->level = $this;
-								$block->onUpdate(self::BLOCK_UPDATE_RANDOM);
-							}
-						}
-					}
-				}
-			}else{
-				for($Y = 0; $Y < 8 and ($Y < 3 or $blockTest !== 0); ++$Y){
-					$blockTest = 0;
+			foreach($chunk->getSubChunks() as $subChunk){
+				if(!$subChunk->isEmpty()){
+					$Y = $subChunk->getY();
 					$k = mt_rand(0, 0x7fffffff);
 					for($i = 0; $i < 3; ++$i, $k >>= 10){
 						$x = $k & 0x0f;
 						$y = ($k >> 8) & 0x0f;
 						$z = ($k >> 16) & 0x0f;
 
-						$blockTest |= $blockId = $chunk->getBlockId($x, $y + ($Y << 4), $z);
+						$blockId = $subChunk->getBlockId($x, $y, $z);
 						if(isset($this->randomTickBlocks[$blockId])){
 							$class = $this->randomTickBlocks[$blockId];
 							/** @var Block $block */
-							$block = new $class($chunk->getBlockData($x, $y + ($Y << 4), $z));
+							$block = new $class($subChunk->getBlockData($x, $y, $z));
 							$block->x = $chunkX * 16 + $x;
 							$block->y = ($Y << 4) + $y;
 							$block->z = $chunkZ * 16 + $z;
@@ -2122,7 +2095,7 @@ class Level implements ChunkManager, Metadatable{
 	}
 
 	/**
-	 * @return FullChunk[]|Chunk[]
+	 * @return Chunk[]
 	 */
 	public function getChunks() : array{
 		return $this->chunks;
@@ -2135,7 +2108,7 @@ class Level implements ChunkManager, Metadatable{
 	 * @param int  $z
 	 * @param bool $create Whether to generate the chunk if it does not exist
 	 *
-	 * @return FullChunk|Chunk
+	 * @return Chunk
 	 */
 	public function getChunk(int $x, int $z, bool $create = false){
 		if(isset($this->chunks[$index = Level::chunkHash($x, $z)])){
@@ -2147,7 +2120,7 @@ class Level implements ChunkManager, Metadatable{
 		return null;
 	}
 
-	public function generateChunkCallback(int $x, int $z, FullChunk $chunk){
+	public function generateChunkCallback(int $x, int $z, Chunk $chunk){
 		Timings::$generationCallbackTimer->startTiming();
 		if(isset($this->chunkPopulationQueue[$index = Level::chunkHash($x, $z)])){
 			$oldChunk = $this->getChunk($x, $z, false);
@@ -2182,10 +2155,10 @@ class Level implements ChunkManager, Metadatable{
 	/**
 	 * @param int       $chunkX
 	 * @param int       $chunkZ
-	 * @param FullChunk $chunk
+	 * @param Chunk     $chunk
 	 * @param bool      $unload
 	 */
-	public function setChunk(int $chunkX, int $chunkZ, FullChunk $chunk = null, bool $unload = true){
+	public function setChunk(int $chunkX, int $chunkZ, Chunk $chunk = null, bool $unload = true){
 		if($chunk === null){
 			return;
 		}
diff --git a/src/pocketmine/level/SimpleChunkManager.php b/src/pocketmine/level/SimpleChunkManager.php
index 4f0d5b8ec..a117c7cb7 100644
--- a/src/pocketmine/level/SimpleChunkManager.php
+++ b/src/pocketmine/level/SimpleChunkManager.php
@@ -23,11 +23,11 @@ declare(strict_types = 1);
 
 namespace pocketmine\level;
 
-use pocketmine\level\format\FullChunk;
+use pocketmine\level\format\Chunk;
 
 class SimpleChunkManager implements ChunkManager{
 
-	/** @var FullChunk[] */
+	/** @var Chunk[] */
 	protected $chunks = [];
 
 	protected $seed;
@@ -100,7 +100,7 @@ class SimpleChunkManager implements ChunkManager{
 	 * @param int $chunkX
 	 * @param int $chunkZ
 	 *
-	 * @return FullChunk|null
+	 * @return Chunk|null
 	 */
 	public function getChunk(int $chunkX, int $chunkZ){
 		return isset($this->chunks[$index = Level::chunkHash($chunkX, $chunkZ)]) ? $this->chunks[$index] : null;
@@ -109,9 +109,9 @@ class SimpleChunkManager implements ChunkManager{
 	/**
 	 * @param int       $chunkX
 	 * @param int       $chunkZ
-	 * @param FullChunk $chunk
+	 * @param Chunk $chunk
 	 */
-	public function setChunk(int $chunkX, int $chunkZ, FullChunk $chunk = null){
+	public function setChunk(int $chunkX, int $chunkZ, Chunk $chunk = null){
 		if($chunk === null){
 			unset($this->chunks[Level::chunkHash($chunkX, $chunkZ)]);
 			return;
diff --git a/src/pocketmine/level/format/Chunk.php b/src/pocketmine/level/format/Chunk.php
index 6a9959410..48716fd86 100644
--- a/src/pocketmine/level/format/Chunk.php
+++ b/src/pocketmine/level/format/Chunk.php
@@ -21,36 +21,400 @@
 
 namespace pocketmine\level\format;
 
-interface Chunk extends FullChunk{
-	const SECTION_COUNT = 8;
+use pocketmine\entity\Entity;
+use pocketmine\level\format\generic\SubChunk;
+use pocketmine\tile\Tile;
+
+interface Chunk{
+	const MAX_SUBCHUNKS = 16;
+
+	const DATA_ORDER_XZY = 0;
+	const DATA_ORDER_YZX = 1;
 
 	/**
-	 * Tests whether a section (mini-chunk) is empty
+	 * @return int
+	 */
+	public function getX() : int;
+
+	/**
+	 * @return int
+	 */
+	public function getZ() : int;
+
+	public function setX(int $x);
+
+	public function setZ(int $z);
+
+	/**
+	 * @return LevelProvider|null
+	 */
+	public function getProvider();
+
+	/**
+	 * @param LevelProvider $provider
+	 */
+	public function setProvider(LevelProvider $provider);
+
+	/**
+	 * Returns the chunk height in subchunks
 	 *
-	 * @param $fY 0-7, (Y / 16)
+	 * @return int
+	 */
+	public function getHeight() : int;
+	/**
+	 * Gets block and meta in one go
+	 *
+	 * @param int $x 0-15
+	 * @param int $y 0-15
+	 * @param int $z 0-15
+	 *
+	 * @return int bitmap, (id << 4) | data
+	 */
+	public function getFullBlock(int $x, int $y, int $z) : int;
+
+	/**
+	 * @param int $x       0-15
+	 * @param int $y       0-255
+	 * @param int $z       0-15
+	 * @param int $blockId , if null, do not change
+	 * @param int $meta    0-15, if null, do not change
+	 *
+	 */
+	public function setBlock(int $x, int $y, int $z, $blockId = null, $meta = null);
+
+	/**
+	 * @param int $x 0-15
+	 * @param int $y 0-255
+	 * @param int $z 0-15
+	 *
+	 * @return int 0-255
+	 */
+	public function getBlockId(int $x, int $y, int $z) : int;
+
+	/**
+	 * @param int $x  0-15
+	 * @param int $y  0-255
+	 * @param int $z  0-15
+	 * @param int $id 0-255
+	 */
+	public function setBlockId(int $x, int $y, int $z, int $id);
+
+	/**
+	 * @param int $x 0-15
+	 * @param int $y 0-255
+	 * @param int $z 0-15
+	 *
+	 * @return int 0-15
+	 */
+	public function getBlockData(int $x, int $y, int $z) : int;
+
+	/**
+	 * @param int $x    0-15
+	 * @param int $y    0-255
+	 * @param int $z    0-15
+	 * @param int $data 0-15
+	 */
+	public function setBlockData(int $x, int $y, int $z, int $data);
+
+	/**
+	 * @param int $x 0-15
+	 * @param int $y 0-255
+	 * @param int $z 0-15
+	 *
+	 * @return int (16-bit)
+	 */
+	public function getBlockExtraData(int $x, int $y, int $z) : int;
+
+	/**
+	 * @param int $x    0-15
+	 * @param int $y    0-255
+	 * @param int $z    0-15
+	 * @param int $data (16-bit)
+	 */
+	public function setBlockExtraData(int $x, int $y, int $z, int $data);
+
+	/**
+	 * @param int $x 0-15
+	 * @param int $y 0-255
+	 * @param int $z 0-15
+	 *
+	 * @return int 0-15
+	 */
+	public function getBlockSkyLight(int $x, int $y, int $z) : int;
+
+	/**
+	 * @param int $x     0-15
+	 * @param int $y     0-255
+	 * @param int $z     0-15
+	 * @param int $level 0-15
+	 */
+	public function setBlockSkyLight(int $x, int $y, int $z, int $level);
+
+	/**
+	 * @param int $x 0-15
+	 * @param int $y 0-255
+	 * @param int $z 0-15
+	 *
+	 * @return int 0-15
+	 */
+	public function getBlockLight(int $x, int $y, int $z) : int;
+
+	/**
+	 * @param int $x     0-15
+	 * @param int $y     0-255
+	 * @param int $z     0-15
+	 * @param int $level 0-15
+	 */
+	public function setBlockLight(int $x, int $y, int $z, int $level);
+
+	/**
+	 * @param int $x 0-15
+	 * @param int $z 0-15
+	 *
+	 * @return int 0-255
+	 */
+	public function getHighestBlockAt(int $x, int $z) : int;
+
+	/**
+	 * @param int $x 0-15
+	 * @param int $z 0-15
+	 *
+	 * @return int 0-255
+	 */
+	public function getHeightMap(int $x, int $z) : int;
+
+	/**
+	 * @param int $x     0-15
+	 * @param int $z     0-15
+	 * @param     $value 0-255
+	 */
+	public function setHeightMap(int $x, int $z, int $value);
+
+	public function recalculateHeightMap();
+
+	public function populateSkyLight();
+
+	/**
+	 * @param int $x 0-15
+	 * @param int $z 0-15
+	 *
+	 * @return int 0-255
+	 */
+	public function getBiomeId(int $x, int $z) : int;
+
+	/**
+	 * @param int $x       0-15
+	 * @param int $z       0-15
+	 * @param int $biomeId 0-255
+	 */
+	public function setBiomeId(int $x, int $z, int $biomeId);
+
+	/**
+	 * @param int $x
+	 * @param int $z
+	 *
+	 * @return int[] RGB bytes
+	 */
+	public function getBiomeColor(int $x, int $z) : int;
+
+	/**
+	 * @param int $x 0-15
+	 * @param int $z 0-15
+	 * @param int $R 0-255
+	 * @param int $G 0-255
+	 * @param int $B 0-255
+	 */
+	public function setBiomeColor(int $x, int $z, int $R, int $G, int $B);
+
+	public function getBlockIdColumn(int $x, int $z) : string;
+
+	public function getBlockDataColumn(int $x, int $z) : string;
+
+	public function getBlockSkyLightColumn(int $x, int $z) : string;
+
+	public function getBlockLightColumn(int $x, int $z) : string;
+
+	public function isLightPopulated() : bool;
+
+	public function setLightPopulated(bool $value = true);
+
+	public function isPopulated() : bool;
+
+	public function setPopulated(bool $value = true);
+
+	public function isGenerated() : bool;
+
+	public function setGenerated(bool $value = true);
+
+	/**
+	 * @param Entity $entity
+	 */
+	public function addEntity(Entity $entity);
+
+	/**
+	 * @param Entity $entity
+	 */
+	public function removeEntity(Entity $entity);
+
+	/**
+	 * @param Tile $tile
+	 */
+	public function addTile(Tile $tile);
+
+	/**
+	 * @param Tile $tile
+	 */
+	public function removeTile(Tile $tile);
+
+	/**
+	 * @return Entity[]
+	 */
+	public function getEntities() : array;
+
+	/**
+	 * @return Tile[]
+	 */
+	public function getTiles() : array;
+
+	/**
+	 * @param int $x 0-15
+	 * @param int $y 0-255
+	 * @param int $z 0-15
+	 */
+	public function getTile(int $x, int $y, int $z);
+
+	/**
+	 * @return bool
+	 */
+	public function isLoaded() : bool;
+
+	/**
+	 * Loads the chunk
+	 *
+	 * @param bool $generate If the chunk does not exist, generate it
 	 *
 	 * @return bool
 	 */
-	public function isSectionEmpty($fY);
+	public function load(bool $generate = true) : bool;
 
 	/**
-	 * @param int $fY 0-7
+	 * @param bool $save
+	 * @param bool $safe If false, unload the chunk even if players are nearby
 	 *
-	 * @return ChunkSection
+	 * @return bool
 	 */
-	public function getSection($fY);
+	public function unload(bool $save = true, bool $safe = true) : bool;
+
+	public function initChunk();
 
 	/**
-	 * @param int          $fY 0-7
-	 * @param ChunkSection $section
+	 * @return string
+	 */
+	public function getBiomeIdArray() : string;
+
+	/**
+	 * @return int[]
+	 */
+	public function getBiomeColorArray() : array;
+
+	/**
+	 * @return int[]
+	 */
+	public function getHeightMapArray() : array;
+
+	public function getBlockIdArray() : string;
+
+	public function getBlockDataArray() : string;
+
+	public function getBlockExtraDataArray() : array;
+
+	public function getBlockSkyLightArray() : string;
+
+	public function getBlockLightArray() : string;
+
+	/**
+	 * @return bool
+	 */
+	public function hasChanged() : bool;
+
+	/**
+	 * @param bool $changed
+	 */
+	public function setChanged(bool $changed = true);
+
+	/**
+	 * @param int  $fY 0-15
+	 * @param bool $generateNew will set and return a modifiable subchunk
 	 *
-	 * @return boolean
+	 * @return SubChunk
 	 */
-	public function setSection($fY, ChunkSection $section);
+	public function getSubChunk(int $fY, bool $generateNew = false) : SubChunk;
+	
+	/**
+	 * @param int      $fY 0-15
+	 * @param SubChunk $subChunk
+	 *
+	 * @return bool
+	 */
+	public function setSubChunk(int $fY, SubChunk $subChunk = null, bool $allowEmpty = false) : bool;
 
 	/**
-	 * @return ChunkSection[]
+	 * @return SubChunk[]
 	 */
-	public function getSections();
+	public function getSubChunks() : array;
+
+	/**
+	 * Returns the index of the highest non-empty subchunk
+	 *
+	 * @return bool
+	 */
+	public function getHighestSubChunkIndex() : int;
+	
+	/**
+	 * Returns the number of subchunks that need sending
+	 *
+	 * @return int
+	 */
+	public function getSubChunkSendCount() : int;
+	
+	/**
+	 * Disposes of empty subchunks
+	 */
+	public function clearEmptySubChunks();
+	
+	/**
+	 * Serializes the chunk to network data
+	 *
+	 * @return string
+	 */
+	public function networkSerialize() : string;
+
+	/**
+	 * Serializes a chunk without compression for use in AsyncTasks.
+	 *
+	 * @return string
+	 */
+	public static function fastSerialize(Chunk $chunk) : string;
+
+	/**
+	 * Deserializes a chunk from fast serialization
+	 *
+	 * @param string        $data
+	 * @param LevelProvider $provider
+	 *
+	 * @return Chunk|null
+	 */
+	public static function fastDeserialize(string $data, LevelProvider $provider = null);
+
+	/**
+	 * Creates and returns an empty chunk
+	 *
+	 * @param int           $chunkX
+	 * @param int           $chunkZ
+	 * @param LevelProvider $provider
+	 *
+	 * @return Chunk
+	 */
+	public static function getEmptyChunk(int $chunkX, int $chunkZ, LevelProvider $provider = null) : Chunk;
 
 }
\ No newline at end of file
diff --git a/src/pocketmine/level/format/ChunkSection.php b/src/pocketmine/level/format/ChunkSection.php
deleted file mode 100644
index 130032bc0..000000000
--- a/src/pocketmine/level/format/ChunkSection.php
+++ /dev/null
@@ -1,169 +0,0 @@
-<?php
-
-/*
- *
- *  ____            _        _   __  __ _                  __  __ ____
- * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
- * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
- * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
- * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * @author PocketMine Team
- * @link http://www.pocketmine.net/
- *
- *
-*/
-
-namespace pocketmine\level\format;
-
-interface ChunkSection{
-
-	/**
-	 * @return int
-	 */
-	public function getY();
-
-	/**
-	 * @param int $x 0-15
-	 * @param int $y 0-15
-	 * @param int $z 0-15
-	 *
-	 * @return int 0-255
-	 */
-	public function getBlockId($x, $y, $z);
-
-	/**
-	 * @param int $x  0-15
-	 * @param int $y  0-15
-	 * @param int $z  0-15
-	 * @param int $id 0-255
-	 */
-	public function setBlockId($x, $y, $z, $id);
-
-	/**
-	 * @param int $x 0-15
-	 * @param int $y 0-15
-	 * @param int $z 0-15
-	 *
-	 * @return int 0-15
-	 */
-	public function getBlockData($x, $y, $z);
-
-	/**
-	 * @param int $x    0-15
-	 * @param int $y    0-15
-	 * @param int $z    0-15
-	 * @param int $data 0-15
-	 */
-	public function setBlockData($x, $y, $z, $data);
-
-	/**
-	 * Gets block and meta in one go
-	 *
-	 * @param int $x 0-15
-	 * @param int $y 0-15
-	 * @param int $z 0-15
-	 *
-	 * @return int bitmap, (id << 4) | data
-	 */
-	public function getFullBlock($x, $y, $z);
-
-	/**
-	 * @param int $x       0-15
-	 * @param int $y       0-15
-	 * @param int $z       0-15
-	 * @param int $blockId , if null, do not change
-	 * @param int $meta    0-15, if null, do not change
-	 *
-	 * @return bool
-	 */
-	public function setBlock($x, $y, $z, $blockId = null, $meta = null);
-
-	/**
-	 * @param int $x 0-15
-	 * @param int $y 0-15
-	 * @param int $z 0-15
-	 *
-	 * @return int 0-15
-	 */
-	public function getBlockSkyLight($x, $y, $z);
-
-	/**
-	 * @param int $x     0-15
-	 * @param int $y     0-15
-	 * @param int $z     0-15
-	 * @param int $level 0-15
-	 */
-	public function setBlockSkyLight($x, $y, $z, $level);
-
-	/**
-	 * @param int $x 0-15
-	 * @param int $y 0-15
-	 * @param int $z 0-15
-	 *
-	 * @return int 0-15
-	 */
-	public function getBlockLight($x, $y, $z);
-
-	/**
-	 * @param int $x     0-15
-	 * @param int $y     0-15
-	 * @param int $z     0-15
-	 * @param int $level 0-15
-	 */
-	public function setBlockLight($x, $y, $z, $level);
-
-	/**
-	 * Returns a id column from low y to high y
-	 *
-	 * @param int $x 0-15
-	 * @param int $z 0-15
-	 *
-	 * @return string[16]
-	 */
-	public function getBlockIdColumn($x, $z);
-
-	/**
-	 * Returns a data column from low y to high y
-	 *
-	 * @param int $x 0-15
-	 * @param int $z 0-15
-	 *
-	 * @return string[8]
-	 */
-	public function getBlockDataColumn($x, $z);
-
-	/**
-	 * Returns a skylight column from low y to high y
-	 *
-	 * @param int $x 0-15
-	 * @param int $z 0-15
-	 *
-	 * @return string[8]
-	 */
-	public function getBlockSkyLightColumn($x, $z);
-
-	/**
-	 * Returns a data column from low y to high y
-	 *
-	 * @param int $x 0-15
-	 * @param int $z 0-15
-	 *
-	 * @return string[8]
-	 */
-	public function getBlockLightColumn($x, $z);
-
-	public function getIdArray();
-
-	public function getDataArray();
-
-	public function getSkyLightArray();
-
-	public function getLightArray();
-
-}
\ No newline at end of file
diff --git a/src/pocketmine/level/format/FullChunk.php b/src/pocketmine/level/format/FullChunk.php
deleted file mode 100644
index df59d950d..000000000
--- a/src/pocketmine/level/format/FullChunk.php
+++ /dev/null
@@ -1,363 +0,0 @@
-<?php
-
-/*
- *
- *  ____            _        _   __  __ _                  __  __ ____
- * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
- * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
- * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
- * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * @author PocketMine Team
- * @link http://www.pocketmine.net/
- *
- *
-*/
-
-namespace pocketmine\level\format;
-
-use pocketmine\entity\Entity;
-use pocketmine\tile\Tile;
-
-interface FullChunk{
-
-	/**
-	 * @return int
-	 */
-	public function getX();
-
-	/**
-	 * @return int
-	 */
-	public function getZ();
-
-	public function setX($x);
-
-	public function setZ($z);
-
-	/**
-	 * @return LevelProvider
-	 */
-	public function getProvider();
-
-	/**
-	 * @param LevelProvider $provider
-	 */
-	public function setProvider(LevelProvider $provider);
-
-	/**
-	 * Gets block and meta in one go
-	 *
-	 * @param int $x 0-15
-	 * @param int $y 0-15
-	 * @param int $z 0-15
-	 *
-	 * @return int bitmap, (id << 4) | data
-	 */
-	public function getFullBlock($x, $y, $z);
-
-	/**
-	 * @param int $x       0-15
-	 * @param int $y       0-127
-	 * @param int $z       0-15
-	 * @param int $blockId , if null, do not change
-	 * @param int $meta    0-15, if null, do not change
-	 *
-	 */
-	public function setBlock($x, $y, $z, $blockId = null, $meta = null);
-
-	/**
-	 * @param int $x 0-15
-	 * @param int $y 0-127
-	 * @param int $z 0-15
-	 *
-	 * @return int 0-255
-	 */
-	public function getBlockId($x, $y, $z);
-
-	/**
-	 * @param int $x  0-15
-	 * @param int $y  0-127
-	 * @param int $z  0-15
-	 * @param int $id 0-255
-	 */
-	public function setBlockId($x, $y, $z, $id);
-
-	/**
-	 * @param int $x 0-15
-	 * @param int $y 0-127
-	 * @param int $z 0-15
-	 *
-	 * @return int 0-15
-	 */
-	public function getBlockData($x, $y, $z);
-
-	/**
-	 * @param int $x    0-15
-	 * @param int $y    0-127
-	 * @param int $z    0-15
-	 * @param int $data 0-15
-	 */
-	public function setBlockData($x, $y, $z, $data);
-
-	/**
-	 * @param int $x 0-15
-	 * @param int $y 0-127
-	 * @param int $z 0-15
-	 *
-	 * @return int (16-bit)
-	 */
-	public function getBlockExtraData($x, $y, $z);
-
-	/**
-	 * @param int $x    0-15
-	 * @param int $y    0-127
-	 * @param int $z    0-15
-	 * @param int $data (16-bit)
-	 */
-	public function setBlockExtraData($x, $y, $z, $data);
-
-	/**
-	 * @param int $x 0-15
-	 * @param int $y 0-127
-	 * @param int $z 0-15
-	 *
-	 * @return int 0-15
-	 */
-	public function getBlockSkyLight($x, $y, $z);
-
-	/**
-	 * @param int $x     0-15
-	 * @param int $y     0-127
-	 * @param int $z     0-15
-	 * @param int $level 0-15
-	 */
-	public function setBlockSkyLight($x, $y, $z, $level);
-
-	/**
-	 * @param int $x 0-15
-	 * @param int $y 0-127
-	 * @param int $z 0-15
-	 *
-	 * @return int 0-15
-	 */
-	public function getBlockLight($x, $y, $z);
-
-	/**
-	 * @param int $x     0-15
-	 * @param int $y     0-127
-	 * @param int $z     0-15
-	 * @param int $level 0-15
-	 */
-	public function setBlockLight($x, $y, $z, $level);
-
-	/**
-	 * @param int $x 0-15
-	 * @param int $z 0-15
-	 *
-	 * @return int 0-127
-	 */
-	public function getHighestBlockAt($x, $z);
-
-	/**
-	 * @param int $x 0-15
-	 * @param int $z 0-15
-	 *
-	 * @return int 0-255
-	 */
-	public function getHeightMap($x, $z);
-
-	/**
-	 * @param int $x     0-15
-	 * @param int $z     0-15
-	 * @param     $value 0-255
-	 */
-	public function setHeightMap($x, $z, $value);
-
-	public function recalculateHeightMap();
-
-	public function populateSkyLight();
-
-	/**
-	 * @param int $x 0-15
-	 * @param int $z 0-15
-	 *
-	 * @return int 0-255
-	 */
-	public function getBiomeId($x, $z);
-
-	/**
-	 * @param int $x       0-15
-	 * @param int $z       0-15
-	 * @param int $biomeId 0-255
-	 */
-	public function setBiomeId($x, $z, $biomeId);
-
-	/**
-	 * @param int $x
-	 * @param int $z
-	 *
-	 * @return int[] RGB bytes
-	 */
-	public function getBiomeColor($x, $z);
-
-	public function getBlockIdColumn($x, $z);
-
-	public function getBlockDataColumn($x, $z);
-
-	public function getBlockSkyLightColumn($x, $z);
-
-	public function getBlockLightColumn($x, $z);
-
-	/**
-	 * @param int $x 0-15
-	 * @param int $z 0-15
-	 * @param int $R 0-255
-	 * @param int $G 0-255
-	 * @param int $B 0-255
-	 */
-	public function setBiomeColor($x, $z, $R, $G, $B);
-
-	public function isLightPopulated();
-
-	public function setLightPopulated($value = 1);
-
-	public function isPopulated();
-
-	public function setPopulated($value = 1);
-
-	public function isGenerated();
-
-	public function setGenerated($value = 1);
-
-	/**
-	 * @param Entity $entity
-	 */
-	public function addEntity(Entity $entity);
-
-	/**
-	 * @param Entity $entity
-	 */
-	public function removeEntity(Entity $entity);
-
-	/**
-	 * @param Tile $tile
-	 */
-	public function addTile(Tile $tile);
-
-	/**
-	 * @param Tile $tile
-	 */
-	public function removeTile(Tile $tile);
-
-	/**
-	 * @return \pocketmine\entity\Entity[]
-	 */
-	public function getEntities();
-
-	/**
-	 * @return \pocketmine\tile\Tile[]
-	 */
-	public function getTiles();
-
-	/**
-	 * @param int $x 0-15
-	 * @param int $y 0-127
-	 * @param int $z 0-15
-	 */
-	public function getTile($x, $y, $z);
-
-	/**
-	 * @return bool
-	 */
-	public function isLoaded();
-
-	/**
-	 * Loads the chunk
-	 *
-	 * @param bool $generate If the chunk does not exist, generate it
-	 *
-	 * @return bool
-	 */
-	public function load($generate = true);
-
-	/**
-	 * @param bool $save
-	 * @param bool $safe If false, unload the chunk even if players are nearby
-	 *
-	 * @return bool
-	 */
-	public function unload($save = true, $safe = true);
-
-	public function initChunk();
-
-	/**
-	 * @return string[]
-	 */
-	public function getBiomeIdArray();
-
-	/**
-	 * @return int[]
-	 */
-	public function getBiomeColorArray();
-
-	/**
-	 * @return int[]
-	 */
-	public function getHeightMapArray();
-
-	public function getBlockIdArray();
-
-	public function getBlockDataArray();
-
-	public function getBlockExtraDataArray();
-
-	public function getBlockSkyLightArray();
-
-	public function getBlockLightArray();
-
-	public function toBinary();
-
-	public function toFastBinary();
-
-	/**
-	 * @return boolean
-	 */
-	public function hasChanged();
-
-	/**
-	 * @param bool $changed
-	 */
-	public function setChanged($changed = true);
-
-	/**
-	 * @param string        $data
-	 * @param LevelProvider $provider
-	 *
-	 * @return FullChunk
-	 */
-	public static function fromBinary($data, LevelProvider $provider = null);
-
-	/**
-	 * @param string        $data
-	 * @param LevelProvider $provider
-	 *
-	 * @return FullChunk
-	 */
-	public static function fromFastBinary($data, LevelProvider $provider = null);
-
-	/**
-	 * @param int           $chunkX
-	 * @param int           $chunkZ
-	 * @param LevelProvider $provider
-	 *
-	 * @return FullChunk
-	 */
-	public static function getEmptyChunk($chunkX, $chunkZ, LevelProvider $provider = null);
-
-}
\ No newline at end of file
diff --git a/src/pocketmine/level/format/LevelProvider.php b/src/pocketmine/level/format/LevelProvider.php
index 0aa979fe6..04488fc76 100644
--- a/src/pocketmine/level/format/LevelProvider.php
+++ b/src/pocketmine/level/format/LevelProvider.php
@@ -21,6 +21,7 @@
 
 namespace pocketmine\level\format;
 
+use pocketmine\level\format\Chunk;
 use pocketmine\level\Level;
 use pocketmine\math\Vector3;
 
@@ -48,9 +49,11 @@ interface LevelProvider{
 	public static function getProviderOrder();
 
 	/**
-	 * @return bool
+	 * Gets the build height limit of this world
+	 *
+	 * @return int
 	 */
-	public static function usesChunkSection();
+	public function getWorldHeight() : int;
 
 	/**
 	 * Requests a MC: PE network chunk to be sent
@@ -106,17 +109,10 @@ interface LevelProvider{
 	 * @param int  $Z      absolute Chunk Z value
 	 * @param bool $create Whether to generate the chunk if it does not exist
 	 *
-	 * @return FullChunk|Chunk
+	 * @return Chunk
 	 */
 	public function getChunk($X, $Z, $create = false);
 
-	/**
-	 * @param $Y 0-7
-	 *
-	 * @return ChunkSection
-	 */
-	public static function createChunkSection($Y);
-
 	public function saveChunks();
 
 	/**
@@ -172,11 +168,11 @@ interface LevelProvider{
 	/**
 	 * @param int       $chunkX
 	 * @param int       $chunkZ
-	 * @param FullChunk $chunk
+	 * @param Chunk $chunk
 	 *
 	 * @return mixed
 	 */
-	public function setChunk($chunkX, $chunkZ, FullChunk $chunk);
+	public function setChunk($chunkX, $chunkZ, Chunk $chunk);
 
 	/**
 	 * @return string
@@ -214,7 +210,7 @@ interface LevelProvider{
 	public function setSpawn(Vector3 $pos);
 
 	/**
-	 * @return FullChunk|Chunk[]
+	 * @return Chunk[]
 	 */
 	public function getLoadedChunks();
 
diff --git a/src/pocketmine/level/format/anvil/Anvil.php b/src/pocketmine/level/format/anvil/Anvil.php
index 6b0625770..933a68d31 100644
--- a/src/pocketmine/level/format/anvil/Anvil.php
+++ b/src/pocketmine/level/format/anvil/Anvil.php
@@ -21,24 +21,134 @@
 
 namespace pocketmine\level\format\anvil;
 
-use pocketmine\level\format\FullChunk;
+use pocketmine\level\format\Chunk;
+use pocketmine\level\format\LevelProvider;
+use pocketmine\level\format\generic\GenericChunk;
+use pocketmine\level\format\generic\SubChunk;
 use pocketmine\level\format\mcregion\McRegion;
 use pocketmine\level\Level;
 use pocketmine\nbt\NBT;
-use pocketmine\nbt\tag\ByteArrayTag;
-use pocketmine\nbt\tag\ByteTag;
-use pocketmine\nbt\tag\CompoundTag;
-use pocketmine\network\protocol\FullChunkDataPacket;
+use pocketmine\nbt\tag\{ByteArrayTag, ByteTag, CompoundTag, IntArrayTag, IntTag, ListTag, LongTag};
+use pocketmine\Player;
 use pocketmine\tile\Spawnable;
 use pocketmine\utils\BinaryStream;
 use pocketmine\utils\ChunkException;
 
 class Anvil extends McRegion{
 
+	public static function nbtSerialize(GenericChunk $chunk) : string{
+		$nbt = new CompoundTag("Level", []);
+		$nbt->xPos = new IntTag("xPos", $chunk->getX());
+		$nbt->zPos = new IntTag("zPos", $chunk->getZ());
+
+		$nbt->V = new ByteTag("V", 1);
+		$nbt->LastUpdate = new LongTag("LastUpdate", 0); //TODO
+		$nbt->InhabitedTime = new LongTag("InhabitedTime", 0); //TODO
+		$nbt->TerrainGenerated = new ByteTag("TerrainGenerated", $chunk->isGenerated());
+		$nbt->TerrainPopulated = new ByteTag("TerrainPopulated", $chunk->isPopulated());
+		$nbt->LightPopulated = new ByteTag("LightPopulated", $chunk->isLightPopulated());
+
+		$nbt->Sections = new ListTag("Sections", []);
+		$nbt->Sections->setTagType(NBT::TAG_Compound);
+		$subChunks = -1;
+		foreach($chunk->getSubChunks() as $subChunk){
+			if($subChunk->isEmpty()){
+				continue;
+			}
+			$nbt->Sections[++$subChunks] = new CompoundTag(null, [
+				"Y"          => new ByteTag("Y", $subChunk->getY()),
+				"Blocks"     => new ByteArrayTag("Blocks",     GenericChunk::reorderByteArray($subChunk->getBlockIdArray())), //Generic in-memory chunks are currrently always XZY
+				"Data"       => new ByteArrayTag("Data",       GenericChunk::reorderNibbleArray($subChunk->getBlockDataArray())),
+				"BlockLight" => new ByteArrayTag("BlockLight", GenericChunk::reorderNibbleArray($subChunk->getBlockLightArray())),
+				"SkyLight"   => new ByteArrayTag("SkyLight",   GenericChunk::reorderNibbleArray($subChunk->getSkyLightArray()))
+			]);
+		}
+
+		$nbt->BiomeColors = new IntArrayTag("BiomeColors", $chunk->getBiomeColorArray());
+		$nbt->HeightMap = new IntArrayTag("HeightMap", $chunk->getHeightMapArray());
+
+		$entities = [];
+
+		foreach($chunk->getEntities() as $entity){
+			if(!($entity instanceof Player) and !$entity->closed){
+				$entity->saveNBT();
+				$entities[] = $entity->namedtag;
+			}
+		}
+
+		$nbt->Entities = new ListTag("Entities", $entities);
+		$nbt->Entities->setTagType(NBT::TAG_Compound);
+
+		$tiles = [];
+		foreach($chunk->getTiles() as $tile){
+			$tile->saveNBT();
+			$tiles[] = $tile->namedtag;
+		}
+
+		$nbt->TileEntities = new ListTag("TileEntities", $tiles);
+		$nbt->TileEntities->setTagType(NBT::TAG_Compound);
+
+		//TODO: TileTicks
+
+		$writer = new NBT(NBT::BIG_ENDIAN);
+		$nbt->setName("Level");
+		$writer->setData(new CompoundTag("", ["Level" => $nbt]));
+
+		return $writer->writeCompressed(ZLIB_ENCODING_DEFLATE, RegionLoader::$COMPRESSION_LEVEL);
+	}
+
+	public static function nbtDeserialize(string $data, LevelProvider $provider = null){
+		$nbt = new NBT(NBT::BIG_ENDIAN);
+		try{
+			$nbt->readCompressed($data, ZLIB_ENCODING_DEFLATE);
+
+			$chunk = $nbt->getData();
+
+			if(!isset($chunk->Level) or !($chunk->Level instanceof CompoundTag)){
+				throw new ChunkException("Invalid NBT format");
+			}
+
+			$chunk = $chunk->Level;
+
+			$subChunks = [];
+			if($chunk->Sections instanceof ListTag){
+				foreach($chunk->Sections as $subChunk){
+					if($subChunk instanceof CompoundTag){
+						$subChunks[] = new SubChunk(
+							$subChunk->Y->getValue(),
+							GenericChunk::reorderByteArray($subChunk->Blocks->getValue()),
+							GenericChunk::reorderNibbleArray($subChunk->Data->getValue()),
+							GenericChunk::reorderNibbleArray($subChunk->BlockLight->getValue()),
+							GenericChunk::reorderNibbleArray($subChunk->SkyLight->getValue())
+						);
+					}
+				}
+			}
+
+			$result = new GenericChunk(
+				$provider,
+				$chunk["xPos"],
+				$chunk["zPos"],
+				$subChunks,
+				$chunk->Entities instanceof ListTag ? $chunk->Entities->getValue() : [],
+				$chunk->TileEntities instanceof ListTag ? $chunk->TileEntities->getValue() : [],
+				$chunk->BiomeColors instanceof IntArrayTag ? $chunk->BiomeColors->getValue() : [],
+				$chunk->HeightMap instanceof IntArrayTag ? $chunk->HeightMap->getValue() : []
+			);
+			$result->setLightPopulated($chunk->LightPopulated instanceof ByteTag ? ((bool) $chunk->LightPopulated->getValue()) : false);
+			$result->setPopulated($chunk->TerrainPopulated instanceof ByteTag ? ((bool) $chunk->TerrainPopulated->getValue()) : false);
+			$result->setGenerated($chunk->TerrainGenerated instanceof ByteTag ? ((bool) $chunk->TerrainGenerated->getValue()) : false);
+			return $result;
+		}catch(\Throwable $e){
+			echo $e->getMessage();
+			return null;
+		}
+	}
+
 	/** @var RegionLoader[] */
 	protected $regions = [];
 
-	/** @var Chunk[] */
+	/** @var AnvilChunk[] */
 	protected $chunks = [];
 
 	public static function getProviderName(){
@@ -49,10 +159,6 @@ class Anvil extends McRegion{
 		return self::ORDER_YZX;
 	}
 
-	public static function usesChunkSection(){
-		return true;
-	}
-
 	public static function isValid($path){
 		$isValid = (file_exists($path . "/level.dat") and is_dir($path . "/region/"));
 
@@ -69,45 +175,9 @@ class Anvil extends McRegion{
 		return $isValid;
 	}
 
-	public function requestChunkTask($x, $z){
-		$chunk = $this->getChunk($x, $z, false);
-		if(!($chunk instanceof Chunk)){
-			throw new ChunkException("Invalid Chunk sent");
-		}
-
-		$tiles = "";
-
-		if(count($chunk->getTiles()) > 0){
-			$nbt = new NBT(NBT::LITTLE_ENDIAN);
-			$list = [];
-			foreach($chunk->getTiles() as $tile){
-				if($tile instanceof Spawnable){
-					$list[] = $tile->getSpawnCompound();
-				}
-			}
-			$nbt->setData($list);
-			$tiles = $nbt->write(true);
-		}
-
-		$extraData = new BinaryStream();
-		$extraData->putLInt(count($chunk->getBlockExtraDataArray()));
-		foreach($chunk->getBlockExtraDataArray() as $key => $value){
-			$extraData->putLInt($key);
-			$extraData->putLShort($value);
-		}
-
-		$ordered = $chunk->getBlockIdArray() .
-			$chunk->getBlockDataArray() .
-			$chunk->getBlockSkyLightArray() .
-			$chunk->getBlockLightArray() .
-			pack("C*", ...$chunk->getHeightMapArray()) .
-			pack("N*", ...$chunk->getBiomeColorArray()) .
-			$extraData->getBuffer() .
-			$tiles;
-
-		$this->getLevel()->chunkRequestCallback($x, $z, $ordered);
-
-		return null;
+	public function getWorldHeight() : int{
+		//TODO: add world height options
+		return 256;
 	}
 
 	/**
@@ -117,55 +187,7 @@ class Anvil extends McRegion{
 	 * @return RegionLoader
 	 */
 	protected function getRegion($x, $z){
-		return isset($this->regions[$index = Level::chunkHash($x, $z)]) ? $this->regions[$index] : null;
-	}
-
-	/**
-	 * @param int  $chunkX
-	 * @param int  $chunkZ
-	 * @param bool $create
-	 *
-	 * @return Chunk
-	 */
-	public function getChunk($chunkX, $chunkZ, $create = false){
-		return parent::getChunk($chunkX, $chunkZ, $create);
-	}
-
-	public function setChunk($chunkX, $chunkZ, FullChunk $chunk){
-		if(!($chunk instanceof Chunk)){
-			throw new ChunkException("Invalid Chunk class");
-		}
-
-		$chunk->setProvider($this);
-
-		self::getRegionIndex($chunkX, $chunkZ, $regionX, $regionZ);
-		$this->loadRegion($regionX, $regionZ);
-
-		$chunk->setX($chunkX);
-		$chunk->setZ($chunkZ);
-		$this->chunks[Level::chunkHash($chunkX, $chunkZ)] = $chunk;
-	}
-
-	public function getEmptyChunk($chunkX, $chunkZ){
-		return Chunk::getEmptyChunk($chunkX, $chunkZ, $this);
-	}
-
-	public static function createChunkSection($Y){
-		return new ChunkSection(new CompoundTag("", [
-			"Y" => new ByteTag("Y", $Y),
-			"Blocks" => new ByteArrayTag("Blocks", str_repeat("\x00", 4096)),
-			"Data" => new ByteArrayTag("Data", str_repeat("\x00", 2048)),
-			"SkyLight" => new ByteArrayTag("SkyLight", str_repeat("\xff", 2048)),
-			"BlockLight" => new ByteArrayTag("BlockLight", str_repeat("\x00", 2048))
-		]));
-	}
-
-	public function isChunkGenerated($chunkX, $chunkZ){
-		if(($region = $this->getRegion($chunkX >> 5, $chunkZ >> 5)) !== null){
-			return $region->chunkExists($chunkX - $region->getX() * 32, $chunkZ - $region->getZ() * 32) and $this->getChunk($chunkX - $region->getX() * 32, $chunkZ - $region->getZ() * 32, true)->isGenerated();
-		}
-
-		return false;
+		return $this->regions[Level::chunkHash($x, $z)] ?? null;
 	}
 
 	protected function loadRegion($x, $z){
diff --git a/src/pocketmine/level/format/anvil/Chunk.php b/src/pocketmine/level/format/anvil/Chunk.php
deleted file mode 100644
index 0f30687d2..000000000
--- a/src/pocketmine/level/format/anvil/Chunk.php
+++ /dev/null
@@ -1,368 +0,0 @@
-<?php
-
-/*
- *
- *  ____            _        _   __  __ _                  __  __ ____
- * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
- * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
- * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
- * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * @author PocketMine Team
- * @link http://www.pocketmine.net/
- *
- *
-*/
-
-namespace pocketmine\level\format\anvil;
-
-use pocketmine\level\format\generic\BaseChunk;
-use pocketmine\level\format\generic\EmptyChunkSection;
-use pocketmine\level\format\LevelProvider;
-use pocketmine\nbt\NBT;
-use pocketmine\nbt\tag\ByteArrayTag;
-use pocketmine\nbt\tag\ByteTag;
-use pocketmine\nbt\tag\CompoundTag;
-use pocketmine\nbt\tag\IntArrayTag;
-use pocketmine\nbt\tag\IntTag;
-use pocketmine\nbt\tag\ListTag;
-use pocketmine\nbt\tag\LongTag;
-use pocketmine\Player;
-use pocketmine\utils\Binary;
-use pocketmine\utils\BinaryStream;
-
-class Chunk extends BaseChunk{
-
-	/** @var CompoundTag */
-	protected $nbt;
-
-	public function __construct($level, CompoundTag $nbt = null){
-		if($nbt === null){
-			$this->provider = $level;
-			$this->nbt = new CompoundTag("Level", []);
-			return;
-		}
-
-		$this->nbt = $nbt;
-
-		if(!isset($this->nbt->Entities) or !($this->nbt->Entities instanceof ListTag)){
-			$this->nbt->Entities = new ListTag("Entities", []);
-			$this->nbt->Entities->setTagType(NBT::TAG_Compound);
-		}
-
-		if(!isset($this->nbt->TileEntities) or !($this->nbt->TileEntities instanceof ListTag)){
-			$this->nbt->TileEntities = new ListTag("TileEntities", []);
-			$this->nbt->TileEntities->setTagType(NBT::TAG_Compound);
-		}
-
-		if(!isset($this->nbt->TileTicks) or !($this->nbt->TileTicks instanceof ListTag)){
-			$this->nbt->TileTicks = new ListTag("TileTicks", []);
-			$this->nbt->TileTicks->setTagType(NBT::TAG_Compound);
-		}
-
-		if(!isset($this->nbt->Sections) or !($this->nbt->Sections instanceof ListTag)){
-			$this->nbt->Sections = new ListTag("Sections", []);
-			$this->nbt->Sections->setTagType(NBT::TAG_Compound);
-		}
-
-		if(!isset($this->nbt->BiomeColors) or !($this->nbt->BiomeColors instanceof IntArrayTag)){
-			$this->nbt->BiomeColors = new IntArrayTag("BiomeColors", array_fill(0, 256, 0));
-		}
-
-		if(!isset($this->nbt->HeightMap) or !($this->nbt->HeightMap instanceof IntArrayTag)){
-			$this->nbt->HeightMap = new IntArrayTag("HeightMap", array_fill(0, 256, 0));
-		}
-
-		$sections = [];
-		foreach($this->nbt->Sections as $section){
-			if($section instanceof CompoundTag){
-				$y = (int) $section["Y"];
-				if($y < 8){
-					$sections[$y] = new ChunkSection($section);
-				}
-			}
-		}
-		for($y = 0; $y < 8; ++$y){
-			if(!isset($sections[$y])){
-				$sections[$y] = new EmptyChunkSection($y);
-			}
-		}
-
-		$extraData = [];
-
-		if(!isset($this->nbt->ExtraData) or !($this->nbt->ExtraData instanceof ByteArrayTag)){
-			$this->nbt->ExtraData = new ByteArrayTag("ExtraData", Binary::writeInt(0));
-		}else{
-			$stream = new BinaryStream($this->nbt->ExtraData->getValue());
-			$count = $stream->getInt();
-			for($i = 0; $i < $count; ++$i){
-				$key = $stream->getInt();
-				$extraData[$key] = $stream->getShort(false);
-			}
-		}
-
-		parent::__construct($level, (int) $this->nbt["xPos"], (int) $this->nbt["zPos"], $sections, $this->nbt->BiomeColors->getValue(), $this->nbt->HeightMap->getValue(), $this->nbt->Entities->getValue(), $this->nbt->TileEntities->getValue(), $extraData);
-
-		if(isset($this->nbt->Biomes)){
-			$this->checkOldBiomes($this->nbt->Biomes->getValue());
-			unset($this->nbt->Biomes);
-		}
-
-		unset($this->nbt->Sections, $this->nbt->ExtraData);
-	}
-
-	public function isLightPopulated(){
-		return $this->nbt["LightPopulated"] > 0;
-	}
-
-	public function setLightPopulated($value = 1){
-		$this->nbt->LightPopulated = new ByteTag("LightPopulated", $value);
-		$this->hasChanged = true;
-	}
-
-	/**
-	 * @return bool
-	 */
-	public function isPopulated(){
-		return $this->nbt["TerrainPopulated"] > 0;
-	}
-
-	/**
-	 * @param int $value
-	 */
-	public function setPopulated($value = 1){
-		$this->nbt->TerrainPopulated = new ByteTag("TerrainPopulated", $value);
-		$this->hasChanged = true;
-	}
-
-	/**
-	 * @return bool
-	 */
-	public function isGenerated(){
-		return $this->nbt["TerrainPopulated"] > 0 or (isset($this->nbt->TerrainGenerated) and $this->nbt["TerrainGenerated"] > 0);
-	}
-
-	/**
-	 * @param int $value
-	 */
-	public function setGenerated($value = 1){
-		$this->nbt->TerrainGenerated = new ByteTag("TerrainGenerated", $value);
-		$this->hasChanged = true;
-	}
-
-	/**
-	 * @return CompoundTag
-	 */
-	public function getNBT(){
-		return $this->nbt;
-	}
-
-	/**
-	 * @param string        $data
-	 * @param LevelProvider $provider
-	 *
-	 * @return Chunk
-	 */
-	public static function fromBinary($data, LevelProvider $provider = null){
-		$nbt = new NBT(NBT::BIG_ENDIAN);
-
-		try{
-			$nbt->readCompressed($data, ZLIB_ENCODING_DEFLATE);
-			$chunk = $nbt->getData();
-
-			if(!isset($chunk->Level) or !($chunk->Level instanceof CompoundTag)){
-				return null;
-			}
-
-			return new Chunk($provider instanceof LevelProvider ? $provider : Anvil::class, $chunk->Level);
-		}catch(\Throwable $e){
-			return null;
-		}
-	}
-
-	/**
-	 * @param string        $data
-	 * @param LevelProvider $provider
-	 *
-	 * @return Chunk
-	 */
-	public static function fromFastBinary($data, LevelProvider $provider = null){
-		$nbt = new NBT(NBT::BIG_ENDIAN);
-
-		try{
-			$nbt->read($data);
-			$chunk = $nbt->getData();
-
-			if(!isset($chunk->Level) or !($chunk->Level instanceof CompoundTag)){
-				return null;
-			}
-
-			return new Chunk($provider instanceof LevelProvider ? $provider : Anvil::class, $chunk->Level);
-		}catch(\Throwable $e){
-			return null;
-		}
-	}
-
-	public function toFastBinary(){
-		$nbt = clone $this->getNBT();
-
-		$nbt->xPos = new IntTag("xPos", $this->x);
-		$nbt->zPos = new IntTag("zPos", $this->z);
-
-		$nbt->Sections = new ListTag("Sections", []);
-		$nbt->Sections->setTagType(NBT::TAG_Compound);
-		foreach($this->getSections() as $section){
-			if($section instanceof EmptyChunkSection){
-				continue;
-			}
-			$nbt->Sections[$section->getY()] = new CompoundTag(null, [
-				"Y" => new ByteTag("Y", $section->getY()),
-				"Blocks" => new ByteArrayTag("Blocks", $section->getIdArray()),
-				"Data" => new ByteArrayTag("Data", $section->getDataArray()),
-				"BlockLight" => new ByteArrayTag("BlockLight", $section->getLightArray()),
-				"SkyLight" => new ByteArrayTag("SkyLight", $section->getSkyLightArray())
-			]);
-		}
-
-		$nbt->BiomeColors = new IntArrayTag("BiomeColors", $this->getBiomeColorArray());
-
-		$nbt->HeightMap = new IntArrayTag("HeightMap", $this->getHeightMapArray());
-
-		$entities = [];
-
-		foreach($this->getEntities() as $entity){
-			if(!($entity instanceof Player) and !$entity->closed){
-				$entity->saveNBT();
-				$entities[] = $entity->namedtag;
-			}
-		}
-
-		$nbt->Entities = new ListTag("Entities", $entities);
-		$nbt->Entities->setTagType(NBT::TAG_Compound);
-
-
-		$tiles = [];
-		foreach($this->getTiles() as $tile){
-			$tile->saveNBT();
-			$tiles[] = $tile->namedtag;
-		}
-
-		$nbt->TileEntities = new ListTag("TileEntities", $tiles);
-		$nbt->TileEntities->setTagType(NBT::TAG_Compound);
-
-		$extraData = new BinaryStream();
-		$extraData->putInt(count($this->getBlockExtraDataArray()));
-		foreach($this->getBlockExtraDataArray() as $key => $value){
-			$extraData->putInt($key);
-			$extraData->putShort($value);
-		}
-
-		$nbt->ExtraData = new ByteArrayTag("ExtraData", $extraData->getBuffer());
-
-		$writer = new NBT(NBT::BIG_ENDIAN);
-		$nbt->setName("Level");
-		$writer->setData(new CompoundTag("", ["Level" => $nbt]));
-
-		return $writer->write();
-	}
-
-	public function toBinary(){
-		$nbt = clone $this->getNBT();
-
-		$nbt->xPos = new IntTag("xPos", $this->x);
-		$nbt->zPos = new IntTag("zPos", $this->z);
-
-		$nbt->Sections = new ListTag("Sections", []);
-		$nbt->Sections->setTagType(NBT::TAG_Compound);
-		foreach($this->getSections() as $section){
-			if($section instanceof EmptyChunkSection){
-				continue;
-			}
-			$nbt->Sections[$section->getY()] = new CompoundTag(null, [
-				"Y" => new ByteTag("Y", $section->getY()),
-				"Blocks" => new ByteArrayTag("Blocks", $section->getIdArray()),
-				"Data" => new ByteArrayTag("Data", $section->getDataArray()),
-				"BlockLight" => new ByteArrayTag("BlockLight", $section->getLightArray()),
-				"SkyLight" => new ByteArrayTag("SkyLight", $section->getSkyLightArray())
-			]);
-		}
-
-		$nbt->BiomeColors = new IntArrayTag("BiomeColors", $this->getBiomeColorArray());
-
-		$nbt->HeightMap = new IntArrayTag("HeightMap", $this->getHeightMapArray());
-
-		$entities = [];
-
-		foreach($this->getEntities() as $entity){
-			if(!($entity instanceof Player) and !$entity->closed){
-				$entity->saveNBT();
-				$entities[] = $entity->namedtag;
-			}
-		}
-
-		$nbt->Entities = new ListTag("Entities", $entities);
-		$nbt->Entities->setTagType(NBT::TAG_Compound);
-
-
-		$tiles = [];
-		foreach($this->getTiles() as $tile){
-			$tile->saveNBT();
-			$tiles[] = $tile->namedtag;
-		}
-
-		$nbt->TileEntities = new ListTag("TileEntities", $tiles);
-		$nbt->TileEntities->setTagType(NBT::TAG_Compound);
-
-		$extraData = new BinaryStream();
-		$extraData->putInt(count($this->getBlockExtraDataArray()));
-		foreach($this->getBlockExtraDataArray() as $key => $value){
-			$extraData->putInt($key);
-			$extraData->putShort($value);
-		}
-
-		$nbt->ExtraData = new ByteArrayTag("ExtraData", $extraData->getBuffer());
-
-		$writer = new NBT(NBT::BIG_ENDIAN);
-		$nbt->setName("Level");
-		$writer->setData(new CompoundTag("", ["Level" => $nbt]));
-
-		return $writer->writeCompressed(ZLIB_ENCODING_DEFLATE, RegionLoader::$COMPRESSION_LEVEL);
-	}
-
-	/**
-	 * @param int           $chunkX
-	 * @param int           $chunkZ
-	 * @param LevelProvider $provider
-	 *
-	 * @return Chunk
-	 */
-	public static function getEmptyChunk($chunkX, $chunkZ, LevelProvider $provider = null){
-		try{
-			$chunk = new Chunk($provider instanceof LevelProvider ? $provider : Anvil::class, null);
-			$chunk->x = $chunkX;
-			$chunk->z = $chunkZ;
-
-			for($y = 0; $y < 8; ++$y){
-				$chunk->sections[$y] = new EmptyChunkSection($y);
-			}
-
-			$chunk->heightMap = array_fill(0, 256, 0);
-			$chunk->biomeColors = array_fill(0, 256, 0);
-
-			$chunk->nbt->V = new ByteTag("V", 1);
-			$chunk->nbt->InhabitedTime = new LongTag("InhabitedTime", 0);
-			$chunk->nbt->TerrainGenerated = new ByteTag("TerrainGenerated", 0);
-			$chunk->nbt->TerrainPopulated = new ByteTag("TerrainPopulated", 0);
-			$chunk->nbt->LightPopulated = new ByteTag("LightPopulated", 0);
-
-			return $chunk;
-		}catch(\Throwable $e){
-			return null;
-		}
-	}
-}
\ No newline at end of file
diff --git a/src/pocketmine/level/format/anvil/ChunkSection.php b/src/pocketmine/level/format/anvil/ChunkSection.php
deleted file mode 100644
index 872fab017..000000000
--- a/src/pocketmine/level/format/anvil/ChunkSection.php
+++ /dev/null
@@ -1,226 +0,0 @@
-<?php
-
-/*
- *
- *  ____            _        _   __  __ _                  __  __ ____
- * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
- * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
- * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
- * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * @author PocketMine Team
- * @link http://www.pocketmine.net/
- *
- *
-*/
-
-namespace pocketmine\level\format\anvil;
-
-use pocketmine\nbt\tag\CompoundTag;
-
-class ChunkSection implements \pocketmine\level\format\ChunkSection{
-
-	private $y;
-	private $blocks;
-	private $data;
-	private $blockLight;
-	private $skyLight;
-
-	public function __construct(CompoundTag $nbt){
-		$this->y = (int) $nbt["Y"];
-		$this->blocks = (string) $nbt["Blocks"];
-		$this->data = (string) $nbt["Data"];
-		$this->blockLight = (string) $nbt["BlockLight"];
-		$this->skyLight = (string) $nbt["SkyLight"];
-	}
-
-	public function getY(){
-		return $this->y;
-	}
-
-	public function getBlockId($x, $y, $z){
-		return ord($this->blocks{($y << 8) + ($z << 4) + $x});
-	}
-
-	public function setBlockId($x, $y, $z, $id){
-		$this->blocks{($y << 8) + ($z << 4) + $x} = chr($id);
-	}
-
-	public function getBlockData($x, $y, $z){
-		$m = ord($this->data{($y << 7) + ($z << 3) + ($x >> 1)});
-		if(($x & 1) === 0){
-			return $m & 0x0F;
-		}else{
-			return $m >> 4;
-		}
-	}
-
-	public function setBlockData($x, $y, $z, $data){
-		$i = ($y << 7) + ($z << 3) + ($x >> 1);
-		$old_m = ord($this->data{$i});
-		if(($x & 1) === 0){
-			$this->data{$i} = chr(($old_m & 0xf0) | ($data & 0x0f));
-		}else{
-			$this->data{$i} = chr((($data & 0x0f) << 4) | ($old_m & 0x0f));
-		}
-	}
-
-	public function getFullBlock($x, $y, $z){
-		$i = ($y << 8) + ($z << 4) + $x;
-		if(($x & 1) === 0){
-			return (ord($this->blocks{$i}) << 4) | (ord($this->data{$i >> 1}) & 0x0F);
-		}else{
-			return (ord($this->blocks{$i}) << 4) | (ord($this->data{$i >> 1}) >> 4);
-		}
-	}
-
-	public function setBlock($x, $y, $z, $blockId = null, $meta = null){
-		$i = ($y << 8) + ($z << 4) + $x;
-
-		$changed = false;
-
-		if($blockId !== null){
-			$blockId = chr($blockId);
-			if($this->blocks{$i} !== $blockId){
-				$this->blocks{$i} = $blockId;
-				$changed = true;
-			}
-		}
-
-		if($meta !== null){
-			$i >>= 1;
-			$old_m = ord($this->data{$i});
-			if(($x & 1) === 0){
-				$this->data{$i} = chr(($old_m & 0xf0) | ($meta & 0x0f));
-				if(($old_m & 0x0f) !== $meta){
-					$changed = true;
-				}
-			}else{
-				$this->data{$i} = chr((($meta & 0x0f) << 4) | ($old_m & 0x0f));
-				if((($old_m & 0xf0) >> 4) !== $meta){
-					$changed = true;
-				}
-			}
-		}
-
-		return $changed;
-	}
-
-	public function getBlockSkyLight($x, $y, $z){
-		$sl = ord($this->skyLight{($y << 7) + ($z << 3) + ($x >> 1)});
-		if(($x & 1) === 0){
-			return $sl & 0x0F;
-		}else{
-			return $sl >> 4;
-		}
-	}
-
-	public function setBlockSkyLight($x, $y, $z, $level){
-		$i = ($y << 7) + ($z << 3) + ($x >> 1);
-		$old_sl = ord($this->skyLight{$i});
-		if(($x & 1) === 0){
-			$this->skyLight{$i} = chr(($old_sl & 0xf0) | ($level & 0x0f));
-		}else{
-			$this->skyLight{$i} = chr((($level & 0x0f) << 4) | ($old_sl & 0x0f));
-		}
-	}
-
-	public function getBlockLight($x, $y, $z){
-		$l = ord($this->blockLight{($y << 7) + ($z << 3) + ($x >> 1)});
-		if(($x & 1) === 0){
-			return $l & 0x0F;
-		}else{
-			return $l >> 4;
-		}
-	}
-
-	public function setBlockLight($x, $y, $z, $level){
-		$i = ($y << 7) + ($z << 3) + ($x >> 1);
-		$old_l = ord($this->blockLight{$i});
-		if(($x & 1) === 0){
-			$this->blockLight{$i} = chr(($old_l & 0xf0) | ($level & 0x0f));
-		}else{
-			$this->blockLight{$i} = chr((($level & 0x0f) << 4) | ($old_l & 0x0f));
-		}
-	}
-
-	public function getBlockIdColumn($x, $z){
-		$i = ($z << 4) + $x;
-		$column = "";
-		for($y = 0; $y < 16; ++$y){
-			$column .= $this->blocks{($y << 8) + $i};
-		}
-
-		return $column;
-	}
-
-	public function getBlockDataColumn($x, $z){
-		$i = ($z << 3) + ($x >> 1);
-		$column = "";
-		if(($x & 1) === 0){
-			for($y = 0; $y < 16; $y += 2){
-				$column .= ($this->data{($y << 7) + $i} & "\x0f") | chr((ord($this->data{(($y + 1) << 7) + $i}) & 0x0f) << 4);
-			}
-		}else{
-			for($y = 0; $y < 16; $y += 2){
-				$column .= chr((ord($this->data{($y << 7) + $i}) & 0xf0) >> 4) | ($this->data{(($y + 1) << 7) + $i} & "\xf0");
-			}
-		}
-
-		return $column;
-	}
-
-	public function getBlockSkyLightColumn($x, $z){
-		$i = ($z << 3) + ($x >> 1);
-		$column = "";
-		if(($x & 1) === 0){
-			for($y = 0; $y < 16; $y += 2){
-				$column .= ($this->skyLight{($y << 7) + $i} & "\x0f") | chr((ord($this->skyLight{(($y + 1) << 7) + $i}) & 0x0f) << 4);
-			}
-		}else{
-			for($y = 0; $y < 16; $y += 2){
-				$column .= chr((ord($this->skyLight{($y << 7) + $i}) & 0xf0) >> 4) | ($this->skyLight{(($y + 1) << 7) + $i} & "\xf0");
-			}
-		}
-
-		return $column;
-	}
-
-	public function getBlockLightColumn($x, $z){
-		$i = ($z << 3) + ($x >> 1);
-		$column = "";
-		if(($x & 1) === 0){
-			for($y = 0; $y < 16; $y += 2){
-				$column .= ($this->blockLight{($y << 7) + $i} & "\x0f") | chr((ord($this->blockLight{(($y + 1) << 7) + $i}) & 0x0f) << 4);
-			}
-		}else{
-			for($y = 0; $y < 16; $y += 2){
-				$column .= chr((ord($this->blockLight{($y << 7) + $i}) & 0xf0) >> 4) | ($this->blockLight{(($y + 1) << 7) + $i} & "\xf0");
-			}
-		}
-
-		return $column;
-	}
-
-	public function getIdArray(){
-		return $this->blocks;
-	}
-
-	public function getDataArray(){
-		return $this->data;
-	}
-
-	public function getSkyLightArray(){
-		return $this->skyLight;
-	}
-
-	public function getLightArray(){
-		return $this->blockLight;
-	}
-
-}
\ No newline at end of file
diff --git a/src/pocketmine/level/format/anvil/RegionLoader.php b/src/pocketmine/level/format/anvil/RegionLoader.php
index 7897474ba..9e4719302 100644
--- a/src/pocketmine/level/format/anvil/RegionLoader.php
+++ b/src/pocketmine/level/format/anvil/RegionLoader.php
@@ -22,6 +22,7 @@
 namespace pocketmine\level\format\anvil;
 
 use pocketmine\level\format\LevelProvider;
+use pocketmine\level\format\generic\GenericChunk;
 
 class RegionLoader extends \pocketmine\level\format\mcregion\RegionLoader{
 
@@ -45,6 +46,14 @@ class RegionLoader extends \pocketmine\level\format\mcregion\RegionLoader{
 	}
 
 	protected function unserializeChunk($data){
-		return Chunk::fromBinary($data, $this->levelProvider);
+		return Anvil::nbtDeserialize($data, $this->levelProvider);
+	}
+	
+	public function writeChunk(GenericChunk $chunk){
+		$this->lastUsed = time();
+		$chunkData = Anvil::nbtSerialize($chunk);
+		if($chunkData !== false){
+			$this->saveChunk($chunk->getX() - ($this->getX() * 32), $chunk->getZ() - ($this->getZ() * 32), $chunkData);
+		}
 	}
 }
\ No newline at end of file
diff --git a/src/pocketmine/level/format/generic/BaseChunk.php b/src/pocketmine/level/format/generic/BaseChunk.php
deleted file mode 100644
index 5cdc24ef9..000000000
--- a/src/pocketmine/level/format/generic/BaseChunk.php
+++ /dev/null
@@ -1,260 +0,0 @@
-<?php
-
-/*
- *
- *  ____            _        _   __  __ _                  __  __ ____
- * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
- * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
- * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
- * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * @author PocketMine Team
- * @link http://www.pocketmine.net/
- *
- *
-*/
-
-namespace pocketmine\level\format\generic;
-
-use pocketmine\level\format\Chunk;
-use pocketmine\level\format\ChunkSection;
-use pocketmine\level\format\LevelProvider;
-use pocketmine\nbt\tag\CompoundTag;
-use pocketmine\utils\Binary;
-use pocketmine\utils\ChunkException;
-
-abstract class BaseChunk extends BaseFullChunk implements Chunk{
-
-	/** @var ChunkSection[] */
-	protected $sections = [];
-
-	/**
-	 * @param LevelProvider  $provider
-	 * @param int            $x
-	 * @param int            $z
-	 * @param ChunkSection[] $sections
-	 * @param int[]          $biomeColors
-	 * @param int[]          $heightMap
-	 * @param CompoundTag[]  $entities
-	 * @param CompoundTag[]  $tiles
-	 *
-	 * @throws ChunkException
-	 */
-	protected function __construct($provider, $x, $z, array $sections, array $biomeColors = [], array $heightMap = [], array $entities = [], array $tiles = []){
-		$this->provider = $provider;
-		$this->x = (int) $x;
-		$this->z = (int) $z;
-		foreach($sections as $Y => $section){
-			if($section instanceof ChunkSection){
-				$this->sections[$Y] = $section;
-			}else{
-				throw new ChunkException("Received invalid ChunkSection instance");
-			}
-
-			if($Y >= self::SECTION_COUNT){
-				throw new ChunkException("Invalid amount of chunks");
-			}
-		}
-
-		if(count($biomeColors) === 256){
-			$this->biomeColors = $biomeColors;
-		}else{
-			$this->biomeColors = array_fill(0, 256, Binary::readInt("\xff\x00\x00\x00"));
-		}
-
-		if(count($heightMap) === 256){
-			$this->heightMap = $heightMap;
-		}else{
-			$this->heightMap = array_fill(0, 256, 127);
-		}
-
-		$this->NBTtiles = $tiles;
-		$this->NBTentities = $entities;
-	}
-
-	public function getFullBlock($x, $y, $z){
-		return $this->sections[$y >> 4]->getFullBlock($x, $y & 0x0f, $z);
-	}
-
-	public function setBlock($x, $y, $z, $blockId = null, $meta = null){
-		try{
-			$this->hasChanged = true;
-			return $this->sections[$y >> 4]->setBlock($x, $y & 0x0f, $z, $blockId & 0xff, $meta & 0x0f);
-		}catch(ChunkException $e){
-			$level = $this->getProvider();
-			$this->setInternalSection($Y = $y >> 4, $level::createChunkSection($Y));
-			return $this->sections[$y >> 4]->setBlock($x, $y & 0x0f, $z, $blockId & 0xff, $meta & 0x0f);
-		}
-	}
-
-	public function getBlockId($x, $y, $z){
-		return $this->sections[$y >> 4]->getBlockId($x, $y & 0x0f, $z);
-	}
-
-	public function setBlockId($x, $y, $z, $id){
-		try{
-			$this->sections[$y >> 4]->setBlockId($x, $y & 0x0f, $z, $id);
-			$this->hasChanged = true;
-		}catch(ChunkException $e){
-			$level = $this->getProvider();
-			$this->setInternalSection($Y = $y >> 4, $level::createChunkSection($Y));
-			$this->setBlockId($x, $y, $z, $id);
-		}
-	}
-
-	public function getBlockData($x, $y, $z){
-		return $this->sections[$y >> 4]->getBlockData($x, $y & 0x0f, $z);
-	}
-
-	public function setBlockData($x, $y, $z, $data){
-		try{
-			$this->sections[$y >> 4]->setBlockData($x, $y & 0x0f, $z, $data);
-			$this->hasChanged = true;
-		}catch(ChunkException $e){
-			$level = $this->getProvider();
-			$this->setInternalSection($Y = $y >> 4, $level::createChunkSection($Y));
-			$this->setBlockData($x, $y, $z, $data);
-		}
-	}
-
-	public function getBlockSkyLight($x, $y, $z){
-		return $this->sections[$y >> 4]->getBlockSkyLight($x, $y & 0x0f, $z);
-	}
-
-	public function setBlockSkyLight($x, $y, $z, $data){
-		try{
-			$this->sections[$y >> 4]->setBlockSkyLight($x, $y & 0x0f, $z, $data);
-			$this->hasChanged = true;
-		}catch(ChunkException $e){
-			$level = $this->getProvider();
-			$this->setInternalSection($Y = $y >> 4, $level::createChunkSection($Y));
-			$this->setBlockSkyLight($x, $y, $z, $data);
-		}
-	}
-
-	public function getBlockLight($x, $y, $z){
-		return $this->sections[$y >> 4]->getBlockLight($x, $y & 0x0f, $z);
-	}
-
-	public function setBlockLight($x, $y, $z, $data){
-		try{
-			$this->sections[$y >> 4]->setBlockLight($x, $y & 0x0f, $z, $data);
-			$this->hasChanged = true;
-		}catch(ChunkException $e){
-			$level = $this->getProvider();
-			$this->setInternalSection($Y = $y >> 4, $level::createChunkSection($Y));
-			$this->setBlockLight($x, $y, $z, $data);
-		}
-	}
-
-	public function getBlockIdColumn($x, $z){
-		$column = "";
-		for($y = 0; $y < Chunk::SECTION_COUNT; ++$y){
-			$column .= $this->sections[$y]->getBlockIdColumn($x, $z);
-		}
-
-		return $column;
-	}
-
-	public function getBlockDataColumn($x, $z){
-		$column = "";
-		for($y = 0; $y < Chunk::SECTION_COUNT; ++$y){
-			$column .= $this->sections[$y]->getBlockDataColumn($x, $z);
-		}
-
-		return $column;
-	}
-
-	public function getBlockSkyLightColumn($x, $z){
-		$column = "";
-		for($y = 0; $y < Chunk::SECTION_COUNT; ++$y){
-			$column .= $this->sections[$y]->getBlockSkyLightColumn($x, $z);
-		}
-
-		return $column;
-	}
-
-	public function getBlockLightColumn($x, $z){
-		$column = "";
-		for($y = 0; $y < Chunk::SECTION_COUNT; ++$y){
-			$column .= $this->sections[$y]->getBlockLightColumn($x, $z);
-		}
-
-		return $column;
-	}
-
-	public function isSectionEmpty($fY){
-		return $this->sections[(int) $fY] instanceof EmptyChunkSection;
-	}
-
-	public function getSection($fY){
-		return $this->sections[(int) $fY];
-	}
-
-	public function setSection($fY, ChunkSection $section){
-		if(substr_count($section->getIdArray(), "\x00") === 4096 and substr_count($section->getDataArray(), "\x00") === 2048){
-			$this->sections[(int) $fY] = new EmptyChunkSection($fY);
-		}else{
-			$this->sections[(int) $fY] = $section;
-		}
-		$this->hasChanged = true;
-	}
-
-	private function setInternalSection($fY, ChunkSection $section){
-		$this->sections[(int) $fY] = $section;
-		$this->hasChanged = true;
-	}
-
-	public function load($generate = true){
-		return $this->getProvider() === null ? false : $this->getProvider()->getChunk($this->getX(), $this->getZ(), true) instanceof Chunk;
-	}
-
-	public function getBlockIdArray(){
-		$blocks = "";
-		for($y = 0; $y < Chunk::SECTION_COUNT; ++$y){
-			$blocks .= $this->sections[$y]->getIdArray();
-		}
-
-		return $blocks;
-	}
-
-	public function getBlockDataArray(){
-		$data = "";
-		for($y = 0; $y < Chunk::SECTION_COUNT; ++$y){
-			$data .= $this->sections[$y]->getDataArray();
-		}
-
-		return $data;
-	}
-
-	public function getBlockSkyLightArray(){
-		$skyLight = "";
-		for($y = 0; $y < Chunk::SECTION_COUNT; ++$y){
-			$skyLight .= $this->sections[$y]->getSkyLightArray();
-		}
-
-		return $skyLight;
-	}
-
-	public function getBlockLightArray(){
-		$blockLight = "";
-		for($y = 0; $y < Chunk::SECTION_COUNT; ++$y){
-			$blockLight .= $this->sections[$y]->getLightArray();
-		}
-
-		return $blockLight;
-	}
-
-	/**
-	 * @return ChunkSection[]
-	 */
-	public function getSections(){
-		return $this->sections;
-	}
-
-}
\ No newline at end of file
diff --git a/src/pocketmine/level/format/generic/BaseFullChunk.php b/src/pocketmine/level/format/generic/BaseFullChunk.php
deleted file mode 100644
index 0cc8aa6a0..000000000
--- a/src/pocketmine/level/format/generic/BaseFullChunk.php
+++ /dev/null
@@ -1,455 +0,0 @@
-<?php
-
-/*
- *
- *  ____            _        _   __  __ _                  __  __ ____
- * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
- * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
- * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
- * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * @author PocketMine Team
- * @link http://www.pocketmine.net/
- *
- *
-*/
-
-namespace pocketmine\level\format\generic;
-
-use pocketmine\block\Block;
-use pocketmine\entity\Entity;
-use pocketmine\level\format\FullChunk;
-use pocketmine\level\format\LevelProvider;
-use pocketmine\level\generator\biome\Biome;
-use pocketmine\level\Level;
-use pocketmine\nbt\tag\CompoundTag;
-use pocketmine\Player;
-use pocketmine\tile\Tile;
-
-
-abstract class BaseFullChunk implements FullChunk{
-
-	/** @var Entity[] */
-	protected $entities = [];
-
-	/** @var Tile[] */
-	protected $tiles = [];
-
-	/** @var Tile[] */
-	protected $tileList = [];
-
-	/** @var int[256] */
-	protected $biomeColors;
-
-	protected $blocks;
-
-	protected $data;
-
-	protected $skyLight;
-
-	protected $blockLight;
-
-	protected $heightMap;
-
-	protected $NBTtiles;
-
-	protected $NBTentities;
-
-	protected $extraData = [];
-
-	/** @var LevelProvider */
-	protected $provider;
-
-	protected $x;
-	protected $z;
-
-	protected $hasChanged = false;
-
-	private $isInit = false;
-
-	/**
-	 * @param LevelProvider $provider
-	 * @param int           $x
-	 * @param int           $z
-	 * @param string        $blocks
-	 * @param string        $data
-	 * @param string        $skyLight
-	 * @param string        $blockLight
-	 * @param int[]         $biomeColors
-	 * @param int[]         $heightMap
-	 * @param CompoundTag[] $entities
-	 * @param CompoundTag[] $tiles
-	 */
-	protected function __construct($provider, $x, $z, $blocks, $data, $skyLight, $blockLight, array $biomeColors = [], array $heightMap = [], array $entities = [], array $tiles = [], array $extraData = []){
-		$this->provider = $provider;
-		$this->x = (int) $x;
-		$this->z = (int) $z;
-
-		$this->blocks = $blocks;
-		$this->data = $data;
-		$this->skyLight = $skyLight;
-		$this->blockLight = $blockLight;
-
-		if(count($biomeColors) === 256){
-			$this->biomeColors = $biomeColors;
-		}else{
-			$this->biomeColors = array_fill(0, 256, 0);
-		}
-
-		if(count($heightMap) === 256){
-			$this->heightMap = $heightMap;
-		}else{
-			$this->heightMap = array_fill(0, 256, 127);
-		}
-
-		$this->extraData = $extraData;
-
-		$this->NBTtiles = $tiles;
-		$this->NBTentities = $entities;
-	}
-
-	protected function checkOldBiomes($data){
-		if(strlen($data) !== 256){
-			return;
-		}
-
-		for($x = 0; $x < 16; ++$x){
-			for($z = 0; $z < 16; ++$z){
-				$biome = Biome::getBiome(ord($data{($z << 4) + $x}));
-				$this->setBiomeId($x, $z, $biome->getId());
-				$c = $biome->getColor();
-				$this->setBiomeColor($x, $z, $c >> 16, ($c >> 8) & 0xff, $c & 0xff);
-			}
-		}
-	}
-
-	public function initChunk(){
-		if($this->getProvider() instanceof LevelProvider and !$this->isInit){
-			$changed = false;
-			if($this->NBTentities !== null){
-				$this->getProvider()->getLevel()->timings->syncChunkLoadEntitiesTimer->startTiming();
-				foreach($this->NBTentities as $nbt){
-					if($nbt instanceof CompoundTag){
-						if(!isset($nbt->id)){
-							$this->setChanged();
-							continue;
-						}
-
-						if(($nbt["Pos"][0] >> 4) !== $this->x or ($nbt["Pos"][2] >> 4) !== $this->z){
-							$changed = true;
-							continue; //Fixes entities allocated in wrong chunks.
-						}
-
-						if(($entity = Entity::createEntity($nbt["id"], $this, $nbt)) instanceof Entity){
-							$entity->spawnToAll();
-						}else{
-							$changed = true;
-							continue;
-						}
-					}
-				}
-				$this->getProvider()->getLevel()->timings->syncChunkLoadEntitiesTimer->stopTiming();
-
-				$this->getProvider()->getLevel()->timings->syncChunkLoadTileEntitiesTimer->startTiming();
-				foreach($this->NBTtiles as $nbt){
-					if($nbt instanceof CompoundTag){
-						if(!isset($nbt->id)){
-							$changed = true;
-							continue;
-						}
-
-						if(($nbt["x"] >> 4) !== $this->x or ($nbt["z"] >> 4) !== $this->z){
-							$changed = true;
-							continue; //Fixes tiles allocated in wrong chunks.
-						}
-
-						if(Tile::createTile($nbt["id"], $this, $nbt) === null){
-							$changed = true;
-							continue;
-						}
-					}
-				}
-
-				$this->getProvider()->getLevel()->timings->syncChunkLoadTileEntitiesTimer->stopTiming();
-
-				$this->NBTentities = null;
-				$this->NBTtiles = null;
-			}
-
-			$this->setChanged($changed);
-
-			$this->isInit = true;
-		}
-	}
-
-	public function getX(){
-		return $this->x;
-	}
-
-	public function getZ(){
-		return $this->z;
-	}
-
-	public function setX($x){
-		$this->x = $x;
-	}
-
-	public function setZ($z){
-		$this->z = $z;
-	}
-
-	/**
-	 * @return LevelProvider
-	 */
-	public function getProvider(){
-		return $this->provider;
-	}
-
-	public function setProvider(LevelProvider $provider){
-		$this->provider = $provider;
-	}
-
-	public function getBiomeId($x, $z){
-		return ($this->biomeColors[($z << 4) + $x] & 0xFF000000) >> 24;
-	}
-
-	public function setBiomeId($x, $z, $biomeId){
-		$this->hasChanged = true;
-		$this->biomeColors[($z << 4) + $x] = ($this->biomeColors[($z << 4) + $x] & 0xFFFFFF) | ($biomeId << 24);
-	}
-
-	public function getBiomeColor($x, $z){
-		$color = $this->biomeColors[($z << 4) + $x] & 0xFFFFFF;
-
-		return [$color >> 16, ($color >> 8) & 0xFF, $color & 0xFF];
-	}
-
-	public function setBiomeColor($x, $z, $R, $G, $B){
-		$this->hasChanged = true;
-		$this->biomeColors[($z << 4) + $x] = ($this->biomeColors[($z << 4) + $x] & 0xFF000000) | (($R & 0xFF) << 16) | (($G & 0xFF) << 8) | ($B & 0xFF);
-	}
-
-	public function getHeightMap($x, $z){
-		return $this->heightMap[($z << 4) + $x];
-	}
-
-	public function setHeightMap($x, $z, $value){
-		$this->heightMap[($z << 4) + $x] = $value;
-	}
-
-	public function recalculateHeightMap(){
-		for($z = 0; $z < 16; ++$z){
-			for($x = 0; $x < 16; ++$x){
-				$this->setHeightMap($x, $z, $this->getHighestBlockAt($x, $z, false));
-			}
-		}
-	}
-
-	public function getBlockExtraData($x, $y, $z){
-		if(isset($this->extraData[$index = Level::chunkBlockHash($x, $y, $z)])){
-			return $this->extraData[$index];
-		}
-
-		return 0;
-	}
-
-	public function setBlockExtraData($x, $y, $z, $data){
-		if($data === 0){
-			unset($this->extraData[Level::chunkBlockHash($x, $y, $z)]);
-		}else{
-			$this->extraData[Level::chunkBlockHash($x, $y, $z)] = $data;
-		}
-
-		$this->setChanged(true);
-	}
-
-	public function populateSkyLight(){
-		for($z = 0; $z < 16; ++$z){
-			for($x = 0; $x < 16; ++$x){
-				$top = $this->getHeightMap($x, $z);
-				for($y = 127; $y > $top; --$y){
-					$this->setBlockSkyLight($x, $y, $z, 15);
-				}
-
-				for($y = $top; $y >= 0; --$y){
-					if(Block::$solid[$this->getBlockId($x, $y, $z)]){
-						break;
-					}
-
-					$this->setBlockSkyLight($x, $y, $z, 15);
-				}
-
-				$this->setHeightMap($x, $z, $this->getHighestBlockAt($x, $z, false));
-			}
-		}
-	}
-
-	public function getHighestBlockAt($x, $z, $cache = true){
-		if($cache){
-			$h = $this->getHeightMap($x, $z);
-
-			if($h !== 0 and $h !== 127){
-				return $h;
-			}
-		}
-
-		$column = $this->getBlockIdColumn($x, $z);
-		for($y = 127; $y >= 0; --$y){
-			if($column{$y} !== "\x00"){
-				$this->setHeightMap($x, $z, $y);
-				return $y;
-			}
-		}
-
-		return 0;
-	}
-
-	public function addEntity(Entity $entity){
-		$this->entities[$entity->getId()] = $entity;
-		if(!($entity instanceof Player) and $this->isInit){
-			$this->hasChanged = true;
-		}
-	}
-
-	public function removeEntity(Entity $entity){
-		unset($this->entities[$entity->getId()]);
-		if(!($entity instanceof Player) and $this->isInit){
-			$this->hasChanged = true;
-		}
-	}
-
-	public function addTile(Tile $tile){
-		$this->tiles[$tile->getId()] = $tile;
-		if(isset($this->tileList[$index = (($tile->z & 0x0f) << 12) | (($tile->x & 0x0f) << 8) | ($tile->y & 0xff)]) and $this->tileList[$index] !== $tile){
-			$this->tileList[$index]->close();
-		}
-		$this->tileList[$index] = $tile;
-		if($this->isInit){
-			$this->hasChanged = true;
-		}
-	}
-
-	public function removeTile(Tile $tile){
-		unset($this->tiles[$tile->getId()]);
-		unset($this->tileList[(($tile->z & 0x0f) << 12) | (($tile->x & 0x0f) << 8) | ($tile->y & 0xff)]);
-		if($this->isInit){
-			$this->hasChanged = true;
-		}
-	}
-
-	public function getEntities(){
-		return $this->entities;
-	}
-
-	public function getTiles(){
-		return $this->tiles;
-	}
-
-	public function getBlockExtraDataArray(){
-		return $this->extraData;
-	}
-
-	public function getTile($x, $y, $z){
-		$index = ($z << 12) | ($x << 8) | $y;
-		return isset($this->tileList[$index]) ? $this->tileList[$index] : null;
-	}
-
-	public function isLoaded(){
-		return $this->getProvider() === null ? false : $this->getProvider()->isChunkLoaded($this->getX(), $this->getZ());
-	}
-
-	public function load($generate = true){
-		return $this->getProvider() === null ? false : $this->getProvider()->getChunk($this->getX(), $this->getZ(), true) instanceof FullChunk;
-	}
-
-	public function unload($save = true, $safe = true){
-		$level = $this->getProvider();
-		if($level === null){
-			return true;
-		}
-		if($save === true and $this->hasChanged){
-			$level->saveChunk($this->getX(), $this->getZ());
-		}
-		if($safe === true){
-			foreach($this->getEntities() as $entity){
-				if($entity instanceof Player){
-					return false;
-				}
-			}
-		}
-
-		foreach($this->getEntities() as $entity){
-			if($entity instanceof Player){
-				continue;
-			}
-			$entity->close();
-		}
-		foreach($this->getTiles() as $tile){
-			$tile->close();
-		}
-		$this->provider = null;
-		return true;
-	}
-
-	public function getBlockIdArray(){
-		return $this->blocks;
-	}
-
-	public function getBlockDataArray(){
-		return $this->data;
-	}
-
-	public function getBlockSkyLightArray(){
-		return $this->skyLight;
-	}
-
-	public function getBlockLightArray(){
-		return $this->blockLight;
-	}
-
-	public function getBiomeIdArray(){
-		$ids = "";
-		foreach($this->biomeColors as $d){
-			$ids .= chr(($d & 0xFF000000) >> 24);
-		}
-		return $ids;
-	}
-
-	public function getBiomeColorArray(){
-		return $this->biomeColors;
-	}
-
-	public function getHeightMapArray(){
-		return $this->heightMap;
-	}
-
-	public function hasChanged(){
-		return $this->hasChanged;
-	}
-
-	public function setChanged($changed = true){
-		$this->hasChanged = (bool) $changed;
-	}
-
-	public static function fromFastBinary($data, LevelProvider $provider = null){
-		return static::fromBinary($data, $provider);
-	}
-
-	public function toFastBinary(){
-		return $this->toBinary();
-	}
-
-	public function isLightPopulated(){
-		return true;
-	}
-
-	public function setLightPopulated($value = 1){
-
-	}
-
-}
diff --git a/src/pocketmine/level/format/generic/BaseLevelProvider.php b/src/pocketmine/level/format/generic/BaseLevelProvider.php
index ebde0ef85..c428787a2 100644
--- a/src/pocketmine/level/format/generic/BaseLevelProvider.php
+++ b/src/pocketmine/level/format/generic/BaseLevelProvider.php
@@ -126,5 +126,44 @@ abstract class BaseLevelProvider implements LevelProvider{
 		file_put_contents($this->getPath() . "level.dat", $buffer);
 	}
 
+	public function requestChunkTask($x, $z){
+		$chunk = $this->getChunk($x, $z, false);
+		if(!($chunk instanceof GenericChunk)){
+			throw new ChunkException("Invalid Chunk sent");
+		}
 
+		/*
+		$tiles = "";
+
+		if(count($chunk->getTiles()) > 0){
+			$nbt = new NBT(NBT::LITTLE_ENDIAN);
+			$list = [];
+			foreach($chunk->getTiles() as $tile){
+				if($tile instanceof Spawnable){
+					$list[] = $tile->getSpawnCompound();
+				}
+			}
+			$nbt->setData($list);
+			$tiles = $nbt->write(true);
+		}
+
+		$extraData = new BinaryStream();
+		$extraData->putLInt(count($chunk->getBlockExtraDataArray()));
+		foreach($chunk->getBlockExtraDataArray() as $key => $value){
+			$extraData->putLInt($key);
+			$extraData->putLShort($value);
+		}
+
+		$ordered = $chunk->getBlockIdArray() .
+			$chunk->getBlockDataArray() .
+			$chunk->getBlockSkyLightArray() .
+			$chunk->getBlockLightArray() .
+			pack("C*", ...$chunk->getHeightMapArray()) .
+			pack("N*", ...$chunk->getBiomeColorArray()) .
+			$extraData->getBuffer() .
+			$tiles;
+		*/
+		
+		$this->getLevel()->chunkRequestCallback($x, $z, $chunk->networkSerialize());
+	}
 }
diff --git a/src/pocketmine/level/format/anvil/ChunkRequestTask.php b/src/pocketmine/level/format/generic/ChunkRequestTask.php
similarity index 52%
rename from src/pocketmine/level/format/anvil/ChunkRequestTask.php
rename to src/pocketmine/level/format/generic/ChunkRequestTask.php
index f86f36fbb..f0a41c3a3 100644
--- a/src/pocketmine/level/format/anvil/ChunkRequestTask.php
+++ b/src/pocketmine/level/format/generic/ChunkRequestTask.php
@@ -19,7 +19,7 @@
  *
 */
 
-namespace pocketmine\level\format\anvil;
+namespace pocketmine\level\format;
 
 use pocketmine\level\Level;
 use pocketmine\nbt\NBT;
@@ -40,10 +40,11 @@ class ChunkRequestTask extends AsyncTask{
 	public function __construct(Level $level, Chunk $chunk){
 		$this->levelId = $level->getId();
 
-		$this->chunk = $chunk->toFastBinary();
+		$this->chunk = GenericChunk::fastSerialize($chunk);
 		$this->chunkX = $chunk->getX();
 		$this->chunkZ = $chunk->getZ();
 
+		//TODO: serialize tiles with chunks
 		$tiles = "";
 		$nbt = new NBT(NBT::LITTLE_ENDIAN);
 		foreach($chunk->getTiles() as $tile){
@@ -57,63 +58,13 @@ class ChunkRequestTask extends AsyncTask{
 	}
 
 	public function onRun(){
+		$chunk = GenericChunk::fastDeserialize($this->chunk);
 
-		$chunk = Chunk::fromFastBinary($this->chunk);
-		$ids = $chunk->getBlockIdArray();
-		$meta = $chunk->getBlockDataArray();
-		$blockLight = $chunk->getBlockLightArray();
-		$skyLight = $chunk->getBlockSkyLightArray();
-
-
-		$orderedIds = "";
-		$orderedData = "";
-		$orderedSkyLight = "";
-		$orderedLight = "";
-
-
-		for($x = 0; $x < 16; ++$x){
-			for($z = 0; $z < 16; ++$z){
-				$orderedIds .= $this->getColumn($ids, $x, $z);
-				$orderedData .= $this->getHalfColumn($meta, $x, $z);
-				$orderedSkyLight .= $this->getHalfColumn($skyLight, $x, $z);
-				$orderedLight .= $this->getHalfColumn($blockLight, $x, $z);
-			}
-		}
-
-		$heightmap = pack("C*", ...$chunk->getHeightMapArray());
-		$biomeColors = pack("N*", ...$chunk->getBiomeColorArray());
-
-		$ordered = $orderedIds . $orderedData . $orderedSkyLight . $orderedLight . $heightmap . $biomeColors . $this->tiles;
+		$ordered = $chunk->networkSerialize();
 
 		$this->setResult($ordered, false);
 	}
 
-	public function getColumn($data, $x, $z){
-		$column = "";
-		$i = ($z << 4) + $x;
-		for($y = 0; $y < 128; ++$y){
-			$column .= $data{($y << 8) + $i};
-		}
-
-		return $column;
-	}
-
-	public function getHalfColumn($data, $x, $z){
-		$column = "";
-		$i = ($z << 3) + ($x >> 1);
-		if(($x & 1) === 0){
-			for($y = 0; $y < 128; $y += 2){
-				$column .= ($data{($y << 7) + $i} & "\x0f") | chr((ord($data{(($y + 1) << 7) + $i}) & 0x0f) << 4);
-			}
-		}else{
-			for($y = 0; $y < 128; $y += 2){
-				$column .= chr((ord($data{($y << 7) + $i}) & 0xf0) >> 4) | ($data{(($y + 1) << 7) + $i} & "\xf0");
-			}
-		}
-
-		return $column;
-	}
-
 	public function onCompletion(Server $server){
 		$level = $server->getLevel($this->levelId);
 		if($level instanceof Level and $this->hasResult()){
diff --git a/src/pocketmine/level/format/generic/EmptyChunkSection.php b/src/pocketmine/level/format/generic/EmptyChunkSection.php
deleted file mode 100644
index b92b19085..000000000
--- a/src/pocketmine/level/format/generic/EmptyChunkSection.php
+++ /dev/null
@@ -1,118 +0,0 @@
-<?php
-
-/*
- *
- *  ____            _        _   __  __ _                  __  __ ____
- * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
- * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
- * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
- * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * @author PocketMine Team
- * @link http://www.pocketmine.net/
- *
- *
-*/
-
-namespace pocketmine\level\format\generic;
-
-use pocketmine\level\format\ChunkSection;
-use pocketmine\utils\ChunkException;
-
-/**
- * Stub used to detect empty chunks
- */
-class EmptyChunkSection implements ChunkSection{
-
-	private $y;
-
-	public function __construct($y){
-		$this->y = $y;
-	}
-
-	final public function getY(){
-		return $this->y;
-	}
-
-	final public function getBlockId($x, $y, $z){
-		return 0;
-	}
-
-	final public function getBlockIdColumn($x, $z){
-		return "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00";
-	}
-
-	final public function getBlockDataColumn($x, $z){
-		return "\x00\x00\x00\x00\x00\x00\x00\x00";
-	}
-
-	final public function getBlockSkyLightColumn($x, $z){
-		return "\xff\xff\xff\xff\xff\xff\xff\xff";
-	}
-
-	final public function getBlockLightColumn($x, $z){
-		return "\x00\x00\x00\x00\x00\x00\x00\x00";
-	}
-
-	final public function getFullBlock($x, $y, $z){
-		return 0;
-	}
-
-	final public function getBlock($x, $y, $z, &$id = null, &$meta = null){
-		$id = 0;
-		$meta = 0;
-	}
-
-	final public function setBlock($x, $y, $z, $id = null, $meta = null){
-		throw new ChunkException("Tried to modify an empty Chunk");
-	}
-
-	public function getIdArray(){
-		return str_repeat("\x00", 4096);
-	}
-
-	public function getDataArray(){
-		return str_repeat("\x00", 2048);
-	}
-
-	public function getSkyLightArray(){
-		return str_repeat("\xff", 2048);
-	}
-
-	public function getLightArray(){
-		return str_repeat("\x00", 2048);
-	}
-
-	final public function setBlockId($x, $y, $z, $id){
-		throw new ChunkException("Tried to modify an empty Chunk");
-	}
-
-	final public function getBlockData($x, $y, $z){
-		return 0;
-	}
-
-	final public function setBlockData($x, $y, $z, $data){
-		throw new ChunkException("Tried to modify an empty Chunk");
-	}
-
-	final public function getBlockLight($x, $y, $z){
-		return 0;
-	}
-
-	final public function setBlockLight($x, $y, $z, $level){
-		throw new ChunkException("Tried to modify an empty Chunk");
-	}
-
-	final public function getBlockSkyLight($x, $y, $z){
-		return 15;
-	}
-
-	final public function setBlockSkyLight($x, $y, $z, $level){
-		throw new ChunkException("Tried to modify an empty Chunk");
-	}
-}
\ No newline at end of file
diff --git a/src/pocketmine/level/format/generic/EmptySubChunk.php b/src/pocketmine/level/format/generic/EmptySubChunk.php
new file mode 100644
index 000000000..16e2a53d4
--- /dev/null
+++ b/src/pocketmine/level/format/generic/EmptySubChunk.php
@@ -0,0 +1,108 @@
+<?php
+
+/*
+ *
+ *  ____            _        _   __  __ _                  __  __ ____
+ * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
+ * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
+ * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
+ * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * @author PocketMine Team
+ * @link http://www.pocketmine.net/
+ *
+ *
+*/
+
+namespace pocketmine\level\format\generic;
+
+use pocketmine\utils\ChunkException;
+
+class EmptySubChunk extends SubChunk{
+	protected $y;
+	
+	public function __construct(int $y){
+		$this->y = $y;
+	}
+
+	public function isEmpty() : bool{
+		return true;
+	}
+
+	public function getBlockId(int $x, int $y, int $z) : int{
+		return 0;
+	}
+
+	public function setBlockId(int $x, int $y, int $z, int $id){
+		throw new ChunkException("Tried to modify nonexistent subchunk");
+	}
+
+	public function getBlockData(int $x, int $y, int $z) : int{
+		return 0;
+	}
+
+	public function setBlockData(int $x, int $y, int $z, int $data){
+		throw new ChunkException("Tried to modify nonexistent subchunk");
+	}
+
+	public function getFullBlock(int $x, int $y, int $z) : int{
+		return 0;
+	}
+
+	public function setBlock(int $x, int $y, int $z, $id = null, $data = null) : bool{
+		throw new ChunkException("Tried to modify nonexistent subchunk");
+	}
+
+	public function getBlockSkyLight(int $x, int $y, int $z) : int{
+		return 15;
+	}
+
+	public function setBlockSkyLight(int $x, int $y, int $z, int $level){
+		throw new ChunkException("Tried to modify nonexistent subchunk");
+	}
+
+	public function getBlockLight(int $x, int $y, int $z) : int{
+		return 0;
+	}
+
+	public function setBlockLight(int $x, int $y, int $z, int $level){
+		throw new ChunkException("Tried to modify nonexistent subchunk");
+	}
+	
+	public function getBlockIdColumn(int $x, int $z) : string{
+		return "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00";
+	}
+	
+	public function getBlockDataColumn(int $x, int $z) : string{
+		return "\x00\x00\x00\x00\x00\x00\x00\x00";
+	}
+	
+	public function getBlockLightColumn(int $x, int $z) : string{
+		return "\x00\x00\x00\x00\x00\x00\x00\x00";
+	}
+	
+	public function getSkyLightColumn(int $x, int $z) : string{
+		return "\xff\xff\xff\xff\xff\xff\xff\xff";
+	}
+
+	public function getBlockIdArray() : string{
+		return str_repeat("\x00", 4096);
+	}
+
+	public function getBlockDataArray() : string{
+		return str_repeat("\x00", 2048);
+	}
+
+	public function getBlockLightArray() : string{
+		return str_repeat("\x00", 2048);
+	}
+
+	public function getSkyLightArray() : string{
+		return str_repeat("\xff", 2048);
+	}
+}
\ No newline at end of file
diff --git a/src/pocketmine/level/format/generic/GenericChunk.php b/src/pocketmine/level/format/generic/GenericChunk.php
new file mode 100644
index 000000000..d5d4e0197
--- /dev/null
+++ b/src/pocketmine/level/format/generic/GenericChunk.php
@@ -0,0 +1,757 @@
+<?php
+
+/*
+ *
+ *  ____            _        _   __  __ _                  __  __ ____
+ * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
+ * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
+ * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
+ * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * @author PocketMine Team
+ * @link http://www.pocketmine.net/
+ *
+ *
+*/
+
+/**
+ * Implementation of MCPE-style chunks with subchunks with XZY ordering.
+ */
+declare(strict_types = 1);
+
+namespace pocketmine\level\format\generic;
+
+use pocketmine\block\Block;
+use pocketmine\entity\Entity;
+use pocketmine\level\format\Chunk;
+use pocketmine\level\format\LevelProvider;
+use pocketmine\level\Level;
+use pocketmine\nbt\tag\CompoundTag;
+use pocketmine\Player;
+use pocketmine\tile\Tile;
+use pocketmine\utils\BinaryStream;
+
+class GenericChunk implements Chunk{
+
+	/** @var LevelProvider */
+	protected $provider;
+
+	protected $x;
+	protected $z;
+
+	protected $hasChanged = false;
+
+	protected $isInit = false;
+
+	protected $lightPopulated = false;
+	protected $terrainGenerated = false;
+	protected $terrainPopulated = false;
+	
+	protected $height = 16;
+
+	/** @var SubChunk[] */
+	protected $subChunks = [];
+
+	/** @var Tile[] */
+	protected $tiles = [];
+	protected $tileList = [];
+
+	/** @var Entity[] */
+	protected $entities = [];
+
+	/** @var int[256] */
+	protected $heightMap = [];
+
+	/** @var int[256] */
+	protected $biomeColors = [];
+
+	protected $extraData = [];
+
+	/** @var CompoundTag[] */
+	protected $NBTtiles = [];
+
+	/** @var CompoundTag[] */
+	protected $NBTentities = [];
+
+	/**
+	 * @param LevelProvider $provider
+	 * @param int           $chunkX
+	 * @param int           $chunkZ
+	 * @param SubChunk[]    $subChunks
+	 * @param CompoundTag[] $entities
+	 * @param CompoundTag[] $tiles
+	 * @param int[256]      $biomeColors
+	 * @param int[256]      $heightMap
+	 */
+	public function __construct($provider, int $chunkX, int $chunkZ, array $subChunks = [], array $entities = [], array $tiles = [], array $biomeColors = [], array $heightMap = []){
+		$this->provider = $provider;
+		$this->x = $chunkX;
+		$this->z = $chunkZ;
+
+		$this->height = $provider !== null ? ($provider->getWorldHeight() >> 4) : 16;
+
+		foreach($subChunks as $subChunk){
+			$y = $subChunk->getY();
+			if($y < 0 or $y >= $this->height){
+				throw new ChunkException("Invalid subchunk index $y!");
+			}
+			if($subChunk->isEmpty()){
+				$this->subChunks[$y] = new EmptySubChunk($y);
+			}else{
+				$this->subChunks[$y] = $subChunk;
+			}
+		}
+
+		for($i = 0; $i < $this->height; ++$i){
+			if(!isset($this->subChunks[$i])){
+				$this->subChunks[$i] = new EmptySubChunk($i);
+			}
+		}
+
+		if(count($heightMap) === 256){
+			$this->heightMap = $heightMap;
+		}else{
+			assert(count($heightMap) === 0, "Wrong HeightMap value count, expected 256, got " . count($heightMap));
+			$this->heightMap = array_fill(0, 256, 0);
+		}
+
+		if(count($biomeColors) === 256){
+			$this->biomeColors = $biomeColors;
+		}else{
+			assert(count($biomeColors) === 0, "Wrong HeightMap value count, expected 256, got " . count($biomeColors));
+			$this->biomeColors = array_fill(0, 256, 0);
+		}
+
+		$this->NBTtiles = $tiles;
+		$this->NBTentities = $entities;
+	}
+
+	public function getX() : int{
+		return $this->x;
+	}
+
+	public function getZ() : int{
+		return $this->z;
+	}
+
+	public function setX(int $x){
+		$this->x = $x;
+	}
+
+	public function setZ(int $z){
+		$this->z = $z;
+	}
+
+	public function getProvider(){
+		return $this->provider;
+	}
+
+	public function setProvider(LevelProvider $provider){
+		$this->provider = $provider;
+	}
+
+	public function getHeight() : int{
+		return $this->height;
+	}
+
+	public function getFullBlock(int $x, int $y, int $z) : int{
+		return $this->getSubChunk($y >> 4)->getFullBlock($x, $y & 0x0f, $z);
+	}
+
+	public function setBlock(int $x, int $y, int $z, $blockId = null, $meta = null){
+		$this->getSubChunk($y >> 4, true)->setBlock($x, $y & 0x0f, $z, $blockId !== null ? ($blockId & 0xff) : null, $meta !== null ? ($meta & 0x0f) : null);
+	}
+
+	public function getBlockId(int $x, int $y, int $z) : int{
+		return $this->getSubChunk($y >> 4)->getBlockId($x, $y & 0x0f, $z);
+	}
+
+	public function setBlockId(int $x, int $y, int $z, int $id){
+		$this->getSubChunk($y >> 4, true)->setBlockId($x, $y & 0x0f, $z, $id);
+	}
+
+	public function getBlockData(int $x, int $y, int $z) : int{
+		return $this->getSubChunk($y >> 4)->getBlockData($x, $y & 0x0f, $z);
+	}
+
+	public function setBlockData(int $x, int $y, int $z, int $data){
+		$this->getSubChunk($y >> 4, true)->setBlockData($x, $y & 0x0f, $z, $data);
+	}
+
+	public function getBlockExtraData(int $x, int $y, int $z) : int{
+		return $this->extraData[Level::chunkBlockHash($x, $y, $z)] ?? 0;
+	}
+
+	public function setBlockExtraData(int $x, int $y, int $z, int $data){
+		if($data === 0){
+			unset($this->extraData[Level::chunkBlockHash($x, $y, $z)]);
+		}else{
+			$this->extraData[Level::chunkBlockHash($x, $y, $z)] = $data;
+		}
+
+		$this->hasChanged = true;
+	}
+
+	public function getBlockSkyLight(int $x, int $y, int $z) : int{
+		return $this->getSubChunk($y >> 4)->getBlockSkyLight($x, $y & 0x0f, $z);
+	}
+
+	public function setBlockSkyLight(int $x, int $y, int $z, int $level){
+		$this->getSubChunk($y >> 4, true)->setBlockSkyLight($x, $y & 0x0f, $z, $level);
+	}
+
+	public function getBlockLight(int $x, int $y, int $z) : int{
+		return $this->getSubChunk($y >> 4)->getBlockLight($x, $y & 0x0f, $z);
+	}
+
+	public function setBlockLight(int $x, int $y, int $z, int $level){
+		$this->getSubChunk($y >> 4, true)->setBlockLight($x, $y & 0x0f, $z, $level);
+	}
+
+	public function getHighestBlockAt(int $x, int $z, bool $useHeightMap = true) : int{
+		if($useHeightMap){
+			$height = $this->getHeightMap($x, $z);
+
+			if($height !== 0 and $height !== 255){
+				return $height;
+			}
+		}
+
+		$index = $this->getHighestSubChunkIndex();
+		if($index < 0){
+			return 0;
+		}
+
+		$height = $index << 4;
+
+		for($y = $index; $y >= 0; --$y){
+			$height = $this->getSubChunk($y)->getHighestBlockAt($x, $z) | ($y << 4);
+			if($height !== -1){
+				break;
+			}
+		}
+
+		$this->setHeightMap($x, $z, $height);
+		return $height;
+	}
+
+	public function getHeightMap(int $x, int $z) : int{
+		return $this->heightMap[($z << 4) | $x];
+	}
+
+	public function setHeightMap(int $x, int $z, int $value){
+		$this->heightMap[($z << 4) | $x] = $value;
+	}
+
+	public function recalculateHeightMap(){
+		for($z = 0; $z < 16; ++$z){
+			for($x = 0; $x < 16; ++$x){
+				$this->setHeightMap($x, $z, $this->getHighestBlockAt($x, $z, false));
+			}
+		}
+	}
+
+	public function populateSkyLight(){
+		for($x = 0; $x < 16; ++$x){
+			for($z = 0; $z < 16; ++$z){
+				$top = $this->getHeightMap($x, $z);
+				for($y = 127; $y > $top; --$y){
+					$this->setBlockSkyLight($x, $y, $z, 15);
+				}
+
+				for($y = $top; $y >= 0; --$y){
+					if(Block::$solid[$this->getBlockId($x, $y, $z)]){
+						break;
+					}
+
+					$this->setBlockSkyLight($x, $y, $z, 15);
+				}
+
+				$this->setHeightMap($x, $z, $this->getHighestBlockAt($x, $z, false));
+			}
+		}
+	}
+
+	public function getBiomeId(int $x, int $z) : int{
+		return ($this->biomeColors[($z << 4) | $x] & 0xFF000000) >> 24;
+	}
+
+	public function setBiomeId(int $x, int $z, int $biomeId){
+		$this->hasChanged = true;
+		$this->biomeColors[($z << 4) | $x] = ($this->biomeColors[($z << 4) | $x] & 0xFFFFFF) | ($biomeId << 24);
+	}
+
+	public function getBiomeColor(int $x, int $z) : int{
+		$color = $this->biomeColors[($z << 4) | $x] & 0xFFFFFF;
+
+		return [$color >> 16, ($color >> 8) & 0xFF, $color & 0xFF];
+	}
+
+	public function setBiomeColor(int $x, int $z, int $R, int $G, int $B){
+		$this->hasChanged = true;
+		$this->biomeColors[($z << 4) | $x] = ($this->biomeColors[($z << 4) | $x] & 0xFF000000) | (($R & 0xFF) << 16) | (($G & 0xFF) << 8) | ($B & 0xFF);
+	}
+
+	public function getBlockIdColumn(int $x, int $z) : string{
+		$result = "";
+		foreach($this->subChunks as $subChunk){
+			$result .= $subChunk->getBlockIdColumn($x, $z);
+		}
+		return $result;
+	}
+
+	public function getBlockDataColumn(int $x, int $z) : string{
+		$result = "";
+		foreach($this->subChunks as $subChunk){
+			$result .= $subChunk->getBlockDataColumn($x, $z);
+		}
+		return $result;
+	}
+
+	public function getBlockSkyLightColumn(int $x, int $z) : string{
+		$result = "";
+		foreach($this->subChunks as $subChunk){
+			$result .= $subChunk->getSkyLightColumn($x, $z);
+		}
+		return $result;
+	}
+
+	public function getBlockLightColumn(int $x, int $z) : string{
+		$result = "";
+		foreach($this->subChunks as $subChunk){
+			$result .= $subChunk->getBlockLightColumn($x, $z);
+		}
+		return $result;
+	}
+
+	public function isLightPopulated() : bool{
+		return $this->lightPopulated;
+	}
+
+	public function setLightPopulated(bool $value = true){
+		$this->lightPopulated = $value;
+	}
+
+	public function isPopulated() : bool{
+		return $this->terrainPopulated;
+	}
+
+	public function setPopulated(bool $value = true){
+		$this->terrainPopulated = $value;
+	}
+
+	public function isGenerated() : bool{
+		return $this->terrainGenerated;
+	}
+
+	public function setGenerated(bool $value = true){
+		$this->terrainGenerated = $value;
+	}
+
+	public function addEntity(Entity $entity){
+		$this->entities[$entity->getId()] = $entity;
+		if(!($entity instanceof Player) and $this->isInit){
+			$this->hasChanged = true;
+		}
+	}
+
+	public function removeEntity(Entity $entity){
+		unset($this->entities[$entity->getId()]);
+		if(!($entity instanceof Player) and $this->isInit){
+			$this->hasChanged = true;
+		}
+	}
+
+	public function addTile(Tile $tile){
+		$this->tiles[$tile->getId()] = $tile;
+		if(isset($this->tileList[$index = (($tile->x & 0x0f) << 12) | (($tile->z & 0x0f) << 8) | ($tile->y & 0xff)]) and $this->tileList[$index] !== $tile){
+			$this->tileList[$index]->close();
+		}
+		$this->tileList[$index] = $tile;
+		if($this->isInit){
+			$this->hasChanged = true;
+		}
+	}
+
+	public function removeTile(Tile $tile){
+		unset($this->tiles[$tile->getId()]);
+		unset($this->tileList[(($tile->x & 0x0f) << 12) | (($tile->z & 0x0f) << 8) | ($tile->y & 0xff)]);
+		if($this->isInit){
+			$this->hasChanged = true;
+		}
+	}
+
+	public function getEntities() : array{
+		return $this->entities;
+	}
+
+	public function getTiles() : array{
+		return $this->tiles;
+	}
+
+	public function getTile(int $x, int $y, int $z){
+		$index = ($x << 12) | ($z << 8) | $y;
+		return $this->tileList[$index] ?? null;
+	}
+
+	public function isLoaded() : bool{
+		return $this->getProvider() === null ? false : $this->getProvider()->isChunkLoaded($this->getX(), $this->getZ());
+	}
+
+	public function load(bool $generate = true) : bool{
+		return $this->getProvider() === null ? false : $this->getProvider()->getChunk($this->getX(), $this->getZ(), true) instanceof GenericChunk;
+	}
+
+	public function unload(bool $save = true, bool $safe = true) : bool{
+		$level = $this->getProvider();
+		if($level === null){
+			return true;
+		}
+		if($save === true and $this->hasChanged){
+			$level->saveChunk($this->getX(), $this->getZ());
+		}
+		if($safe === true){
+			foreach($this->getEntities() as $entity){
+				if($entity instanceof Player){
+					return false;
+				}
+			}
+		}
+
+		foreach($this->getEntities() as $entity){
+			if($entity instanceof Player){
+				continue;
+			}
+			$entity->close();
+		}
+		foreach($this->getTiles() as $tile){
+			$tile->close();
+		}
+		$this->provider = null;
+		return true;
+	}
+
+	public function initChunk(){
+		if($this->getProvider() instanceof LevelProvider and !$this->isInit){
+			$changed = false;
+			if($this->NBTentities !== null){
+				$this->getProvider()->getLevel()->timings->syncChunkLoadEntitiesTimer->startTiming();
+				foreach($this->NBTentities as $nbt){
+					if($nbt instanceof CompoundTag){
+						if(!isset($nbt->id)){
+							$changed = true;
+							continue;
+						}
+
+						if(($nbt["Pos"][0] >> 4) !== $this->x or ($nbt["Pos"][2] >> 4) !== $this->z){
+							$changed = true;
+							continue; //Fixes entities allocated in wrong chunks.
+						}
+
+						if(($entity = Entity::createEntity($nbt["id"], $this, $nbt)) instanceof Entity){
+							$entity->spawnToAll();
+						}else{
+							$changed = true;
+							continue;
+						}
+					}
+				}
+				$this->getProvider()->getLevel()->timings->syncChunkLoadEntitiesTimer->stopTiming();
+
+				$this->getProvider()->getLevel()->timings->syncChunkLoadTileEntitiesTimer->startTiming();
+				foreach($this->NBTtiles as $nbt){
+					if($nbt instanceof CompoundTag){
+						if(!isset($nbt->id)){
+							$changed = true;
+							continue;
+						}
+
+						if(($nbt["x"] >> 4) !== $this->x or ($nbt["z"] >> 4) !== $this->z){
+							$changed = true;
+							continue; //Fixes tiles allocated in wrong chunks.
+						}
+
+						if(Tile::createTile($nbt["id"], $this, $nbt) === null){
+							$changed = true;
+							continue;
+						}
+					}
+				}
+
+				$this->getProvider()->getLevel()->timings->syncChunkLoadTileEntitiesTimer->stopTiming();
+
+				$this->NBTentities = null;
+				$this->NBTtiles = null;
+			}
+
+			$this->hasChanged = $changed;
+
+			$this->isInit = true;
+		}
+	}
+
+	public function getBiomeIdArray() : string{
+		$ids = str_repeat("\x00", 256);
+		foreach($this->biomeColors as $i => $d){
+			$ids{$i} = chr(($d & 0xFF000000) >> 24);
+		}
+		return $ids;
+	}
+
+	public function getBiomeColorArray() : array{
+		return $this->biomeColors;
+	}
+
+	public function getHeightMapArray() : array{
+		return $this->heightMap;
+	}
+
+	public function getBlockIdArray() : string{
+		$result = "";
+		foreach($this->subChunks as $subChunk){
+			$result .= $subChunk->getBlockIdArray();
+		}
+		return $result;
+	}
+
+	public function getBlockDataArray() : string{
+		$result = "";
+		foreach($this->subChunks as $subChunk){
+			$result .= $subChunk->getBlockDataArray();
+		}
+		return $result;
+	}
+
+	public function getBlockExtraDataArray() : array{
+		return $this->extraData;
+	}
+
+	public function getBlockSkyLightArray() : string{
+		$result = "";
+		foreach($this->subChunks as $subChunk){
+			$result .= $subChunk->getSkyLightArray();
+		}
+		return $result;
+	}
+
+	public function getBlockLightArray() : string{
+		$result = "";
+		foreach($this->subChunks as $subChunk){
+			$result .= $subChunk->getBlockLightArray();
+		}
+		return $result;
+	}
+
+	public function hasChanged() : bool{
+		return $this->hasChanged;
+	}
+
+	public function setChanged(bool $value = true){
+		$this->hasChanged = $value;
+	}
+
+	public function getSubChunk(int $fY, bool $generateNew = false) : SubChunk{
+		if($fY < 0 or $fY >= self::MAX_SUBCHUNKS){
+			return new EmptySubChunk($fY);
+		}elseif($generateNew and $this->subChunks[$fY] instanceof EmptySubChunk){
+			$this->subChunks[$fY] = new SubChunk($fY);
+		}
+		return $this->subChunks[$fY];
+	}
+
+	public function setSubChunk(int $fY, SubChunk $subChunk = null, bool $allowEmpty = false) : bool{
+		if($fY < 0 or $fY >= self::MAX_SUBCHUNKS){
+			return false;
+		}
+		if($subChunk === null or ($subChunk->isEmpty() and !$allowEmpty)){
+			$this->subChunks[$fY] = new EmptySubChunk();
+		}else{
+			$this->subChunks[$fY] = $subChunk;
+		}
+		$this->hasChanged = true;
+		return true;
+	}
+
+	public function getSubChunks() : array{
+		return $this->subChunks;
+	}
+
+	public function getHighestSubChunkIndex() : int{
+		for($y = count($this->subChunks) - 1; $y >= 0; --$y){
+			if($this->subChunks[$y] === null or $this->subChunks[$y]->isEmpty()){
+				continue;
+			}
+			break;
+		}
+
+		return $y;
+	}
+
+	public function getSubChunkSendCount() : int{
+		return $this->getHighestSubChunkIndex() + 1;
+	}
+
+	public function getNonEmptySubChunkCount() : int{
+		$result = 0;
+		foreach($this->subChunks as $subChunk){
+			if($subChunk->isEmpty()){
+				continue;
+			}
+			++$result;
+		}
+		return $result;
+	}
+
+	public function clearEmptySubChunks(){
+		foreach($this->subChunks as $y => $subChunk){
+			if($subChunk->isEmpty()){
+				if($y < 0 or $y > self::MAX_SUBCHUNKS){
+					assert(false, "Invalid subchunk index");
+					unset($this->subChunks[$y]);
+				}elseif($subChunk instanceof EmptySubChunk){
+					continue;
+				}else{
+					$this->subChunks[$y] = new EmptySubChunk($y);
+				}
+				$this->hasChanged = true;
+			}
+		}
+	}
+
+	public function networkSerialize() : string{
+		$result = "";
+		$subChunkCount = $this->getSubChunkSendCount();
+		$result .= chr($subChunkCount);
+		for($y = 0; $y < $subChunkCount; ++$y){
+			$subChunk = $this->subChunks[$y];
+			$result .= "\x00" //unknown byte!
+				. $subChunk->getBlockIdArray()
+				. $subChunk->getBlockDataArray()
+				. $subChunk->getSkyLightArray()
+				. $subChunk->getBlockLightArray();
+		}
+
+		//TODO: heightmaps, tile data
+		return $result;
+	}
+
+	public static function fastSerialize(Chunk $chunk) : string{
+		$stream = new BinaryStream();
+		$stream->putInt($chunk->x);
+		$stream->putInt($chunk->z);
+		$count = 0;
+		$subChunks = "";
+		foreach($chunk->subChunks as $subChunk){
+			if($subChunk->isEmpty()){
+				continue;
+			}
+			++$count;
+			$subChunks .= chr($subChunk->getY())
+				. $subChunk->getBlockIdArray()
+				. $subChunk->getBlockDataArray()
+				. $subChunk->getSkyLightArray()
+				. $subChunk->getBlockLightArray();
+		}
+		$stream->putByte($count);
+		$stream->put($subChunks);
+		$stream->put(pack("C*", ...$chunk->getHeightMapArray()) .
+			pack("N*", ...$chunk->getBiomeColorArray()) .
+			chr(($chunk->lightPopulated ? 1 << 2 : 0) | ($chunk->terrainPopulated ? 1 << 1 : 0) | ($chunk->terrainGenerated ? 1 : 0)));
+		//TODO: tiles and entities
+		return $stream->getBuffer();
+	}
+
+	public static function fastDeserialize(string $data, LevelProvider $provider = null){
+		$stream = new BinaryStream();
+		$stream->setBuffer($data);
+		$data = null;
+		$x = $stream->getInt();
+		$z = $stream->getInt();
+		$subChunks = [];
+		$count = $stream->getByte();
+		for($y = 0; $y < $count; ++$y){
+			$subChunks[] = new SubChunk(
+				$stream->getByte(), //y
+				$stream->get(4096), //blockIds
+				$stream->get(2048), //blockData
+				$stream->get(2048), //skyLight
+				$stream->get(2048)  //blockLight
+			);
+		}
+		$heightMap = array_values(unpack("C*", $stream->get(256)));
+		$biomeColors = array_values(unpack("N*", $stream->get(1024)));
+
+		$chunk = new GenericChunk($provider, $x, $z, $subChunks, $heightMap, $biomeColors);
+		$flags = $stream->getByte();
+		$chunk->lightPopulated = (bool) ($flags & 4);
+		$chunk->terrainPopulated = (bool) ($flags & 2);
+		$chunk->terrainGenerated = (bool) ($flags & 1);
+		return $chunk;
+	}
+
+	public static function getEmptyChunk(int $x, int $z, LevelProvider $provider = null) : Chunk{
+		return new GenericChunk($provider, $x, $z);
+	}
+
+	/**
+	 * Re-orders a byte array (YZX -> XZY and vice versa)
+	 *
+	 * @param string $array length 4096
+	 *
+	 * @return string length 4096
+	 */
+	public static final function reorderByteArray(string $array) : string{
+		$result = str_repeat("\x00", 4096);
+		for($x = 0; $x < 16; ++$x){
+			for($z = 0; $z < 16; ++$z){
+				for($y = 0; $y < 16; ++$y){
+					$result{($x << 8) | ($z << 4) | $y} = $array{($y << 8) | ($z << 4) | $x};
+				}
+			}
+		}
+		return $result;
+	}
+	
+	/**
+	 * Re-orders a nibble array (YZX -> XZY and vice versa)
+	 *
+	 * @param string $array length 2048
+	 *
+	 * @return string length 2048
+	 */
+	public static final function reorderNibbleArray(string $array) : string{
+		$result = str_repeat("\x00", 2048);
+		for($x = 0; $x < 16; ++$x){
+			for($z = 0; $z < 16; ++$z){
+				for($y = 0; $y < 16; ++$y){
+					$inputIndex = (($y << 7) | ($z << 3) | ($x >> 1));
+					$outputIndex = (($x << 7) | ($z << 3) | ($y >> 1));
+					$current = ord($result{$outputIndex});
+					$byte = ord($array{$inputIndex});
+
+					if(($y & 1) === 0){
+						if(($x & 1) === 0){
+							$current |= ($byte & 0x0f);
+						}else{
+							$current |= (($byte >> 4) & 0x0f);
+						}
+					}else{
+						if(($x & 1) === 0){
+							$current |= (($byte << 4) & 0xf0);
+						}else{
+							$current |= ($byte & 0xf0);
+						}
+					}
+					$result{$outputIndex} = chr($current);
+				}
+			}
+		}
+		return $result;
+	}
+
+}
\ No newline at end of file
diff --git a/src/pocketmine/level/format/generic/SubChunk.php b/src/pocketmine/level/format/generic/SubChunk.php
new file mode 100644
index 000000000..6fce6864d
--- /dev/null
+++ b/src/pocketmine/level/format/generic/SubChunk.php
@@ -0,0 +1,205 @@
+<?php
+
+/*
+ *
+ *  ____            _        _   __  __ _                  __  __ ____
+ * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
+ * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
+ * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
+ * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * @author PocketMine Team
+ * @link http://www.pocketmine.net/
+ *
+ *
+*/
+
+namespace pocketmine\level\format\generic;
+
+class SubChunk{
+	protected $y;
+
+	protected $ids;
+	protected $data;
+	protected $blockLight;
+	protected $skyLight;
+
+	private static function assignData(&$target, $data, $length, $char = "\x00"){
+		if(strlen($data) !== $length){
+			assert($data === "", "Invalid non-zero length given, expected $length, got " . strlen($data));
+			$target = str_repeat($char, $length);
+		}else{
+			$target = $data;
+		}
+	}
+
+	public function __construct(int $y, string $ids = "", string $data = "", string $blockLight = "", string $skyLight = ""){
+		$this->y = $y;
+		self::assignData($this->ids, $ids, 4096);
+		self::assignData($this->data, $data, 2048);
+		self::assignData($this->blockLight, $blockLight, 2048);
+		self::assignData($this->skyLight, $skyLight, 2048, "\xff");
+	}
+	
+	public function getY() : int{
+		return $this->y;
+	}
+
+	public function isEmpty() : bool{
+		assert(strlen($this->ids) === 4096, "Wrong length of ID array, expecting 4096 bytes, got " . strlen($this->ids));
+		return substr_count($this->ids, "\x00") === 4096;
+	}
+
+	public function getBlockId(int $x, int $y, int $z) : int{
+		return ord($this->ids{($x << 8) | ($z << 4) | $y});
+	}
+
+	public function setBlockId(int $x, int $y, int $z, int $id){
+		$this->ids{($x << 8) | ($z << 4) | $y} = chr($id);
+	}
+
+	public function getBlockData(int $x, int $y, int $z) : int{
+		$m = ord($this->data{($x << 7) + ($z << 3) + ($y >> 1)});
+		if(($y & 1) === 0){
+			return $m & 0x0f;
+		}else{
+			return $m >> 4;
+		}
+	}
+
+	public function setBlockData(int $x, int $y, int $z, int $data){
+		$i = ($x << 7) | ($z << 3) | ($y >> 1);
+		$current = ord($this->data{$i});
+		if(($y & 1) === 0){
+			$this->data{$i} = chr(($current & 0xf0) | ($data & 0x0f));
+		}else{
+			$this->data{$i} = chr((($data & 0x0f) << 4) | ($current & 0x0f));
+		}
+		$this->hasChanged = true;
+	}
+
+	public function getFullBlock(int $x, int $y, int $z) : int{
+		$i = ($x << 8) | ($z << 4) | $y;
+		if(($y & 1) === 0){
+			return (ord($this->ids{$i}) << 4) | (ord($this->data{$i >> 1}) & 0x0f);
+		}else{
+			return (ord($this->ids{$i}) << 4) | (ord($this->data{$i >> 1}) >> 4);
+		}
+	}
+
+	public function setBlock(int $x, int $y, int $z, $id = null, $data = null) : bool{
+		$i = ($x << 8) | ($z << 4) | $y;
+		$changed = false;
+		if($id !== null){
+			$block = chr($id);
+			if($this->ids{$i} !== $block){
+				$this->ids{$i} = $block;
+				$changed = true;
+			}
+		}
+
+		if($data !== null){
+			$i >>= 1;
+			$byte = ord($this->data{$i});
+			if(($y & 1) === 0){
+				$this->data{$i} = chr(($byte & 0xf0) | ($data & 0x0f));
+			}else{
+				$this->data{$i} = chr((($data & 0x0f) << 4) | ($byte & 0x0f));
+			}
+			if($this->data{$i} !== $byte){
+				$changed = true;
+			}
+		}
+
+		return $changed;
+	}
+
+	public function getBlockSkyLight(int $x, int $y, int $z) : int{
+		$byte = ord($this->skyLight{($x << 7) + ($z << 3) + ($y >> 1)});
+		if(($y & 1) === 0){
+			return $byte & 0x0f;
+		}else{
+			return $byte >> 4;
+		}
+	}
+
+	public function setBlockSkyLight(int $x, int $y, int $z, int $level){
+		$i = ($x << 7) + ($z << 3) + ($y >> 1);
+		$byte = ord($this->skyLight{$i});
+		if(($y & 1) === 0){
+			$this->skyLight{$i} = chr(($byte & 0xf0) | ($level & 0x0f));
+		}else{
+			$this->skyLight{$i} = chr((($level & 0x0f) << 4) | ($byte & 0x0f));
+		}
+	}
+
+	public function getBlockLight(int $x, int $y, int $z) : int{
+		$byte = ord($this->blockLight{($x << 7) + ($z << 3) + ($y >> 1)});
+		if(($y & 1) === 0){
+			return $byte & 0x0f;
+		}else{
+			return $byte >> 4;
+		}
+	}
+
+	public function setBlockLight(int $x, int $y, int $z, int $level){
+		$i = ($x << 7) + ($z << 3) + ($y >> 1);
+		$byte = ord($this->blockLight{$i});
+		if(($y & 1) === 0){
+			$this->blockLight{$i} = chr(($byte & 0xf0) | ($level & 0x0f));
+		}else{
+			$this->blockLight{$i} = chr((($level & 0x0f) << 4) | ($byte & 0x0f));
+		}
+	}
+
+	public function getHighestBlockAt(int $x, int $z) : int{
+		for($y = 15; $y >= 0; --$y){
+			if($this->ids{($x << 8) | ($z << 4) | $y} !== "\x00"){
+				return $y;
+			}
+		}
+
+		return -1; //highest block not in this subchunk
+	}
+	
+	public function getBlockIdColumn(int $x, int $z) : string{
+		return substr($this->ids, (($x << 8) | ($z << 4)), 16);
+	}
+	
+	public function getBlockDataColumn(int $x, int $z) : string{
+		return substr($this->data, (($x << 7) | ($z << 3)), 8);
+	}
+	
+	public function getBlockLightColumn(int $x, int $z) : string{
+		return substr($this->blockLight, (($x << 7) | ($z << 3)), 8);
+	}
+	
+	public function getSkyLightColumn(int $x, int $z) : string{
+		return substr($this->skyLight, (($x << 7) | ($z << 3)), 8);
+	}
+
+	public function getBlockIdArray() : string{
+		assert(strlen($this->ids) === 4096, "Wrong length of ID array, expecting 4096 bytes, got " . strlen($this->ids));
+		return $this->ids;
+	}
+
+	public function getBlockDataArray() : string{
+		assert(strlen($this->data) === 2048, "Wrong length of data array, expecting 2048 bytes, got " . strlen($this->data));
+		return $this->data;
+	}
+
+	public function getBlockLightArray() : string{
+		assert(strlen($this->blockLight) === 2048, "Wrong length of light array, expecting 2048 bytes, got " . strlen($this->blockLight));
+		return $this->data;
+	}
+
+	public function getSkyLightArray() : string{
+		assert(strlen($this->skyLight) === 2048, "Wrong length of skylight array, expecting 2048 bytes, got " . strlen($this->skyLight));
+		return $this->data;
+	}
+}
\ No newline at end of file
diff --git a/src/pocketmine/level/format/leveldb/Chunk.php b/src/pocketmine/level/format/leveldb/Chunk.php
index 0e4635091..3f5bb7d68 100644
--- a/src/pocketmine/level/format/leveldb/Chunk.php
+++ b/src/pocketmine/level/format/leveldb/Chunk.php
@@ -21,14 +21,14 @@
 
 namespace pocketmine\level\format\leveldb;
 
-use pocketmine\level\format\generic\BaseFullChunk;
+use pocketmine\level\format\generic\BaseChunk;
 use pocketmine\level\format\LevelProvider;
 use pocketmine\nbt\NBT;
 use pocketmine\Player;
 use pocketmine\utils\Binary;
 use pocketmine\utils\BinaryStream;
 
-class Chunk extends BaseFullChunk{
+class Chunk extends BaseChunk{
 
 	const DATA_LENGTH = 16384 * (2 + 1 + 1 + 1) + 256 + 1024;
 
diff --git a/src/pocketmine/level/format/leveldb/LevelDB.php b/src/pocketmine/level/format/leveldb/LevelDB.php
index 2d94241e9..ffa58ee45 100644
--- a/src/pocketmine/level/format/leveldb/LevelDB.php
+++ b/src/pocketmine/level/format/leveldb/LevelDB.php
@@ -21,7 +21,7 @@
 
 namespace pocketmine\level\format\leveldb;
 
-use pocketmine\level\format\FullChunk;
+use pocketmine\level\format\Chunk;
 use pocketmine\level\format\generic\BaseLevelProvider;
 use pocketmine\level\generator\Generator;
 use pocketmine\level\Level;
@@ -259,7 +259,7 @@ class LevelDB extends BaseLevelProvider{
 
 	public function unloadChunk($x, $z, $safe = true){
 		$chunk = isset($this->chunks[$index = Level::chunkHash($x, $z)]) ? $this->chunks[$index] : null;
-		if($chunk instanceof FullChunk and $chunk->unload(false, $safe)){
+		if($chunk instanceof Chunk and $chunk->unload(false, $safe)){
 			unset($this->chunks[$index]);
 			return true;
 		}
@@ -302,7 +302,7 @@ class LevelDB extends BaseLevelProvider{
 		return $this->db;
 	}
 
-	public function setChunk($chunkX, $chunkZ, FullChunk $chunk){
+	public function setChunk($chunkX, $chunkZ, Chunk $chunk){
 		if(!($chunk instanceof Chunk)){
 			throw new ChunkException("Invalid Chunk class");
 		}
@@ -341,7 +341,7 @@ class LevelDB extends BaseLevelProvider{
 
 	public function isChunkPopulated($chunkX, $chunkZ){
 		$chunk = $this->getChunk($chunkX, $chunkZ);
-		if($chunk instanceof FullChunk){
+		if($chunk instanceof Chunk){
 			return $chunk->isPopulated();
 		}else{
 			return false;
diff --git a/src/pocketmine/level/format/mcregion/Chunk.php b/src/pocketmine/level/format/mcregion/Chunk.php
deleted file mode 100644
index d37225a26..000000000
--- a/src/pocketmine/level/format/mcregion/Chunk.php
+++ /dev/null
@@ -1,462 +0,0 @@
-<?php
-
-/*
- *
- *  ____            _        _   __  __ _                  __  __ ____
- * |  _ \ ___   ___| | _____| |_|  \/  (_)_ __   ___      |  \/  |  _ \
- * | |_) / _ \ / __| |/ / _ \ __| |\/| | | '_ \ / _ \_____| |\/| | |_) |
- * |  __/ (_) | (__|   <  __/ |_| |  | | | | | |  __/_____| |  | |  __/
- * |_|   \___/ \___|_|\_\___|\__|_|  |_|_|_| |_|\___|     |_|  |_|_|
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * @author PocketMine Team
- * @link http://www.pocketmine.net/
- *
- *
-*/
-
-namespace pocketmine\level\format\mcregion;
-
-use pocketmine\level\format\generic\BaseFullChunk;
-use pocketmine\level\format\LevelProvider;
-use pocketmine\nbt\NBT;
-use pocketmine\nbt\tag\ByteArrayTag;
-use pocketmine\nbt\tag\ByteTag;
-use pocketmine\nbt\tag\CompoundTag;
-use pocketmine\nbt\tag\IntArrayTag;
-use pocketmine\nbt\tag\IntTag;
-use pocketmine\nbt\tag\ListTag;
-use pocketmine\nbt\tag\LongTag;
-use pocketmine\Player;
-use pocketmine\utils\Binary;
-use pocketmine\utils\BinaryStream;
-
-class Chunk extends BaseFullChunk{
-
-	/** @var CompoundTag */
-	protected $nbt;
-
-	public function __construct($level, CompoundTag $nbt = null){
-		if($nbt === null){
-			$this->provider = $level;
-			$this->nbt = new CompoundTag("Level", []);
-			return;
-		}
-
-		$this->nbt = $nbt;
-
-		if(isset($this->nbt->Entities) and $this->nbt->Entities instanceof ListTag){
-			$this->nbt->Entities->setTagType(NBT::TAG_Compound);
-		}else{
-			$this->nbt->Entities = new ListTag("Entities", []);
-			$this->nbt->Entities->setTagType(NBT::TAG_Compound);
-		}
-
-		if(isset($this->nbt->TileEntities) and $this->nbt->TileEntities instanceof ListTag){
-			$this->nbt->TileEntities->setTagType(NBT::TAG_Compound);
-		}else{
-			$this->nbt->TileEntities = new ListTag("TileEntities", []);
-			$this->nbt->TileEntities->setTagType(NBT::TAG_Compound);
-		}
-
-		if(isset($this->nbt->TileTicks) and $this->nbt->TileTicks instanceof ListTag){
-			$this->nbt->TileTicks->setTagType(NBT::TAG_Compound);
-		}else{
-			$this->nbt->TileTicks = new ListTag("TileTicks", []);
-			$this->nbt->TileTicks->setTagType(NBT::TAG_Compound);
-		}
-
-		if(!isset($this->nbt->BiomeColors) or !($this->nbt->BiomeColors instanceof IntArrayTag)){
-			$this->nbt->BiomeColors = new IntArrayTag("BiomeColors", array_fill(0, 256, 0));
-		}
-
-		if(!isset($this->nbt->HeightMap) or !($this->nbt->HeightMap instanceof IntArrayTag)){
-			$this->nbt->HeightMap = new IntArrayTag("HeightMap", array_fill(0, 256, 0));
-		}
-
-		if(!isset($this->nbt->Blocks)){
-			$this->nbt->Blocks = new ByteArrayTag("Blocks", str_repeat("\x00", 32768));
-		}
-
-		if(!isset($this->nbt->Data)){
-			$this->nbt->Data = new ByteArrayTag("Data", $half = str_repeat("\x00", 16384));
-			$this->nbt->SkyLight = new ByteArrayTag("SkyLight", $half);
-			$this->nbt->BlockLight = new ByteArrayTag("BlockLight", $half);
-		}
-
-		$extraData = [];
-
-		if(!isset($this->nbt->ExtraData) or !($this->nbt->ExtraData instanceof ByteArrayTag)){
-			$this->nbt->ExtraData = new ByteArrayTag("ExtraData", Binary::writeInt(0));
-		}else{
-			$stream = new BinaryStream($this->nbt->ExtraData->getValue());
-			$count = $stream->getInt();
-			for($i = 0; $i < $count; ++$i){
-				$key = $stream->getInt();
-				$extraData[$key] = $stream->getShort(false);
-			}
-		}
-
-		parent::__construct($level, $this->nbt["xPos"], $this->nbt["zPos"], $this->nbt->Blocks->getValue(), $this->nbt->Data->getValue(), $this->nbt->SkyLight->getValue(), $this->nbt->BlockLight->getValue(), $this->nbt->BiomeColors->getValue(), $this->nbt->HeightMap->getValue(), $this->nbt->Entities->getValue(), $this->nbt->TileEntities->getValue(), $extraData);
-
-		if(isset($this->nbt->Biomes)){
-			$this->checkOldBiomes($this->nbt->Biomes->getValue());
-			unset($this->nbt->Biomes);
-		}
-
-		unset($this->nbt->Blocks);
-		unset($this->nbt->Data);
-		unset($this->nbt->SkyLight);
-		unset($this->nbt->BlockLight);
-		unset($this->nbt->BiomeColors);
-		unset($this->nbt->HeightMap);
-		unset($this->nbt->Biomes);
-	}
-
-	public function getBlockId($x, $y, $z){
-		return ord($this->blocks{($x << 11) | ($z << 7) | $y});
-	}
-
-	public function setBlockId($x, $y, $z, $id){
-		$this->blocks{($x << 11) | ($z << 7) | $y} = chr($id);
-		$this->hasChanged = true;
-	}
-
-	public function getBlockData($x, $y, $z){
-		$m = ord($this->data{($x << 10) | ($z << 6) | ($y >> 1)});
-		if(($y & 1) === 0){
-			return $m & 0x0F;
-		}else{
-			return $m >> 4;
-		}
-	}
-
-	public function setBlockData($x, $y, $z, $data){
-		$i = ($x << 10) | ($z << 6) | ($y >> 1);
-		$old_m = ord($this->data{$i});
-		if(($y & 1) === 0){
-			$this->data{$i} = chr(($old_m & 0xf0) | ($data & 0x0f));
-		}else{
-			$this->data{$i} = chr((($data & 0x0f) << 4) | ($old_m & 0x0f));
-		}
-		$this->hasChanged = true;
-	}
-
-	public function getFullBlock($x, $y, $z){
-		$i = ($x << 11) | ($z << 7) | $y;
-		if(($y & 1) === 0){
-			return (ord($this->blocks{$i}) << 4) | (ord($this->data{$i >> 1}) & 0x0F);
-		}else{
-			return (ord($this->blocks{$i}) << 4) | (ord($this->data{$i >> 1}) >> 4);
-		}
-	}
-
-	public function setBlock($x, $y, $z, $blockId = null, $meta = null){
-		$i = ($x << 11) | ($z << 7) | $y;
-
-		$changed = false;
-
-		if($blockId !== null){
-			$blockId = chr($blockId);
-			if($this->blocks{$i} !== $blockId){
-				$this->blocks{$i} = $blockId;
-				$changed = true;
-			}
-		}
-
-		if($meta !== null){
-			$i >>= 1;
-			$old_m = ord($this->data{$i});
-			if(($y & 1) === 0){
-				$this->data{$i} = chr(($old_m & 0xf0) | ($meta & 0x0f));
-				if(($old_m & 0x0f) !== $meta){
-					$changed = true;
-				}
-			}else{
-				$this->data{$i} = chr((($meta & 0x0f) << 4) | ($old_m & 0x0f));
-				if((($old_m & 0xf0) >> 4) !== $meta){
-					$changed = true;
-				}
-			}
-		}
-
-		if($changed){
-			$this->hasChanged = true;
-		}
-
-		return $changed;
-	}
-
-	public function getBlockSkyLight($x, $y, $z){
-		$sl = ord($this->skyLight{($x << 10) | ($z << 6) | ($y >> 1)});
-		if(($y & 1) === 0){
-			return $sl & 0x0F;
-		}else{
-			return $sl >> 4;
-		}
-	}
-
-	public function setBlockSkyLight($x, $y, $z, $level){
-		$i = ($x << 10) | ($z << 6) | ($y >> 1);
-		$old_sl = ord($this->skyLight{$i});
-		if(($y & 1) === 0){
-			$this->skyLight{$i} = chr(($old_sl & 0xf0) | ($level & 0x0f));
-		}else{
-			$this->skyLight{$i} = chr((($level & 0x0f) << 4) | ($old_sl & 0x0f));
-		}
-		$this->hasChanged = true;
-	}
-
-	public function getBlockLight($x, $y, $z){
-		$l = ord($this->blockLight{($x << 10) | ($z << 6) | ($y >> 1)});
-		if(($y & 1) === 0){
-			return $l & 0x0F;
-		}else{
-			return $l >> 4;
-		}
-	}
-
-	public function setBlockLight($x, $y, $z, $level){
-		$i = ($x << 10) | ($z << 6) | ($y >> 1);
-		$old_l = ord($this->blockLight{$i});
-		if(($y & 1) === 0){
-			$this->blockLight{$i} = chr(($old_l & 0xf0) | ($level & 0x0f));
-		}else{
-			$this->blockLight{$i} = chr((($level & 0x0f) << 4) | ($old_l & 0x0f));
-		}
-		$this->hasChanged = true;
-	}
-
-	public function getBlockIdColumn($x, $z){
-		return substr($this->blocks, ($x << 11) + ($z << 7), 128);
-	}
-
-	public function getBlockDataColumn($x, $z){
-		return substr($this->data, ($x << 10) + ($z << 6), 64);
-	}
-
-	public function getBlockSkyLightColumn($x, $z){
-		return substr($this->skyLight, ($x << 10) + ($z << 6), 64);
-	}
-
-	public function getBlockLightColumn($x, $z){
-		return substr($this->blockLight, ($x << 10) + ($z << 6), 64);
-	}
-
-	public function isLightPopulated(){
-		return $this->nbt["LightPopulated"] > 0;
-	}
-
-	public function setLightPopulated($value = 1){
-		$this->nbt->LightPopulated = new ByteTag("LightPopulated", $value ? 1 : 0);
-		$this->hasChanged = true;
-	}
-
-	/**
-	 * @return bool
-	 */
-	public function isPopulated(){
-		return isset($this->nbt->TerrainPopulated) and $this->nbt->TerrainPopulated->getValue() > 0;
-	}
-
-	/**
-	 * @param int $value
-	 */
-	public function setPopulated($value = 1){
-		$this->nbt->TerrainPopulated = new ByteTag("TerrainPopulated", $value ? 1 : 0);
-		$this->hasChanged = true;
-	}
-
-	/**
-	 * @return bool
-	 */
-	public function isGenerated(){
-		if(isset($this->nbt->TerrainGenerated)){
-			return $this->nbt->TerrainGenerated->getValue() > 0;
-		}elseif(isset($this->nbt->TerrainPopulated)){
-			return $this->nbt->TerrainPopulated->getValue() > 0;
-		}
-		return false;
-	}
-
-	/**
-	 * @param int $value
-	 */
-	public function setGenerated($value = 1){
-		$this->nbt->TerrainGenerated = new ByteTag("TerrainGenerated", (int) $value);
-		$this->hasChanged = true;
-	}
-
-	/**
-	 * @param string        $data
-	 * @param LevelProvider $provider
-	 *
-	 * @return Chunk
-	 */
-	public static function fromBinary($data, LevelProvider $provider = null){
-		$nbt = new NBT(NBT::BIG_ENDIAN);
-
-		try{
-			$nbt->readCompressed($data, ZLIB_ENCODING_DEFLATE);
-			$chunk = $nbt->getData();
-
-			if(!isset($chunk->Level) or !($chunk->Level instanceof CompoundTag)){
-				return null;
-			}
-
-			return new Chunk($provider instanceof LevelProvider ? $provider : McRegion::class, $chunk->Level);
-		}catch(\Throwable $e){
-			return null;
-		}
-	}
-
-	public static function fromFastBinary($data, LevelProvider $provider = null){
-
-		try{
-			$offset = 0;
-
-			$chunk = new Chunk($provider instanceof LevelProvider ? $provider : McRegion::class, null);
-			$chunk->provider = $provider;
-			$chunk->x = Binary::readInt(substr($data, $offset, 4));
-			$offset += 4;
-			$chunk->z = Binary::readInt(substr($data, $offset, 4));
-			$offset += 4;
-
-			$chunk->blocks = substr($data, $offset, 32768);
-			$offset += 32768;
-			$chunk->data = substr($data, $offset, 16384);
-			$offset += 16384;
-			$chunk->skyLight = substr($data, $offset, 16384);
-			$offset += 16384;
-			$chunk->blockLight = substr($data, $offset, 16384);
-			$offset += 16384;
-
-			$chunk->heightMap = array_values(unpack("C*", substr($data, $offset, 256)));
-			$offset += 256;
-			$chunk->biomeColors = array_values(unpack("N*", substr($data, $offset, 1024)));
-			$offset += 1024;
-
-			$flags = ord($data{$offset++});
-
-			$chunk->nbt->TerrainGenerated = new ByteTag("TerrainGenerated", $flags & 0b1);
-			$chunk->nbt->TerrainPopulated = new ByteTag("TerrainPopulated", ($flags >> 1) & 0b1);
-			$chunk->nbt->LightPopulated = new ByteTag("LightPopulated", ($flags >> 2) & 0b1);
-
-			return $chunk;
-		}catch(\Throwable $e){
-			return null;
-		}
-	}
-
-	public function toFastBinary(){
-		return
-			Binary::writeInt($this->x) .
-			Binary::writeInt($this->z) .
-			$this->getBlockIdArray() .
-			$this->getBlockDataArray() .
-			$this->getBlockSkyLightArray() .
-			$this->getBlockLightArray() .
-			pack("C*", ...$this->getHeightMapArray()) .
-			pack("N*", ...$this->getBiomeColorArray()) .
-			chr(($this->isLightPopulated() ? 1 << 2 : 0) + ($this->isPopulated() ? 1 << 1 : 0) + ($this->isGenerated() ? 1 : 0));
-	}
-
-	public function toBinary(){
-		$nbt = clone $this->getNBT();
-
-		$nbt->xPos = new IntTag("xPos", $this->x);
-		$nbt->zPos = new IntTag("zPos", $this->z);
-
-		if($this->isGenerated()){
-			$nbt->Blocks = new ByteArrayTag("Blocks", $this->getBlockIdArray());
-			$nbt->Data = new ByteArrayTag("Data", $this->getBlockDataArray());
-			$nbt->SkyLight = new ByteArrayTag("SkyLight", $this->getBlockSkyLightArray());
-			$nbt->BlockLight = new ByteArrayTag("BlockLight", $this->getBlockLightArray());
-
-			$nbt->BiomeColors = new IntArrayTag("BiomeColors", $this->getBiomeColorArray());
-
-			$nbt->HeightMap = new IntArrayTag("HeightMap", $this->getHeightMapArray());
-		}
-
-		$entities = [];
-
-		foreach($this->getEntities() as $entity){
-			if(!($entity instanceof Player) and !$entity->closed){
-				$entity->saveNBT();
-				$entities[] = $entity->namedtag;
-			}
-		}
-
-		$nbt->Entities = new ListTag("Entities", $entities);
-		$nbt->Entities->setTagType(NBT::TAG_Compound);
-
-
-		$tiles = [];
-		foreach($this->getTiles() as $tile){
-			$tile->saveNBT();
-			$tiles[] = $tile->namedtag;
-		}
-
-		$nbt->TileEntities = new ListTag("TileEntities", $tiles);
-		$nbt->TileEntities->setTagType(NBT::TAG_Compound);
-
-		$extraData = new BinaryStream();
-		$extraData->putInt(count($this->getBlockExtraDataArray()));
-		foreach($this->getBlockExtraDataArray() as $key => $value){
-			$extraData->putInt($key);
-			$extraData->putShort($value);
-		}
-
-		$nbt->ExtraData = new ByteArrayTag("ExtraData", $extraData->getBuffer());
-
-		$writer = new NBT(NBT::BIG_ENDIAN);
-		$nbt->setName("Level");
-		$writer->setData(new CompoundTag("", ["Level" => $nbt]));
-
-		return $writer->writeCompressed(ZLIB_ENCODING_DEFLATE, RegionLoader::$COMPRESSION_LEVEL);
-	}
-
-	/**
-	 * @return CompoundTag
-	 */
-	public function getNBT(){
-		return $this->nbt;
-	}
-
-	/**
-	 * @param int           $chunkX
-	 * @param int           $chunkZ
-	 * @param LevelProvider $provider
-	 *
-	 * @return Chunk
-	 */
-	public static function getEmptyChunk($chunkX, $chunkZ, LevelProvider $provider = null){
-		try{
-			$chunk = new Chunk($provider instanceof LevelProvider ? $provider : McRegion::class, null);
-			$chunk->x = $chunkX;
-			$chunk->z = $chunkZ;
-
-			$chunk->data = str_repeat("\x00", 16384);
-			$chunk->blocks = $chunk->data . $chunk->data;
-			$chunk->skyLight = str_repeat("\xff", 16384);
-			$chunk->blockLight = $chunk->data;
-
-			$chunk->heightMap = array_fill(0, 256, 0);
-			$chunk->biomeColors = array_fill(0, 256, 0);
-
-			$chunk->nbt->V = new ByteTag("V", 1);
-			$chunk->nbt->InhabitedTime = new LongTag("InhabitedTime", 0);
-			$chunk->nbt->TerrainGenerated = new ByteTag("TerrainGenerated", 0);
-			$chunk->nbt->TerrainPopulated = new ByteTag("TerrainPopulated", 0);
-			$chunk->nbt->LightPopulated = new ByteTag("LightPopulated", 0);
-
-			return $chunk;
-		}catch(\Throwable $e){
-			return null;
-		}
-	}
-}
\ No newline at end of file
diff --git a/src/pocketmine/level/format/mcregion/McRegion.php b/src/pocketmine/level/format/mcregion/McRegion.php
index 93d3a76cf..07c78dee6 100644
--- a/src/pocketmine/level/format/mcregion/McRegion.php
+++ b/src/pocketmine/level/format/mcregion/McRegion.php
@@ -21,26 +21,157 @@
 
 namespace pocketmine\level\format\mcregion;
 
-use pocketmine\level\format\FullChunk;
+use pocketmine\level\format\Chunk;
+use pocketmine\level\format\LevelProvider;
+use pocketmine\level\format\generic\GenericChunk;
+use pocketmine\level\format\generic\SubChunk;
 use pocketmine\level\format\generic\BaseLevelProvider;
 use pocketmine\level\generator\Generator;
 use pocketmine\level\Level;
 use pocketmine\nbt\NBT;
-use pocketmine\nbt\tag\ByteTag;
-use pocketmine\nbt\tag\CompoundTag;
-use pocketmine\nbt\tag\IntTag;
-use pocketmine\nbt\tag\LongTag;
-use pocketmine\nbt\tag\StringTag;
-use pocketmine\tile\Spawnable;
-use pocketmine\utils\BinaryStream;
+use pocketmine\nbt\tag\{ByteArrayTag, ByteTag, CompoundTag, IntArrayTag, IntTag, ListTag, LongTag, StringTag};
+use pocketmine\Player;
 use pocketmine\utils\ChunkException;
 
 class McRegion extends BaseLevelProvider{
+	
+	public static function nbtSerialize(GenericChunk $chunk) : string{
+		$nbt = new CompoundTag("Level", []);
+		$nbt->xPos = new IntTag("xPos", $chunk->getX());
+		$nbt->zPos = new IntTag("zPos", $chunk->getZ());
+
+		$nbt->V = new ByteTag("V", 0); //guess
+		$nbt->LastUpdate = new LongTag("LastUpdate", 0); //TODO
+		$nbt->InhabitedTime = new LongTag("InhabitedTime", 0); //TODO
+		$nbt->TerrainGenerated = new ByteTag("TerrainGenerated", $chunk->isGenerated());
+		$nbt->TerrainPopulated = new ByteTag("TerrainPopulated", $chunk->isPopulated());
+		$nbt->LightPopulated = new ByteTag("LightPopulated", $chunk->isLightPopulated());
+
+		$ids = "";
+		$data = "";
+		$blockLight = "";
+		$skyLight = "";
+		for($x = 0; $x < 16; ++$x){
+			for($z = 0; $z < 16; ++$z){
+				for($y = 0; $y < 8; ++$y){
+					$subChunk = $chunk->getSubChunk($y);
+					$ids .= $subChunk->getBlockIdColumn($x, $z);
+					$data .= $subChunk->getBlockDataColumn($x, $z);
+					$blockLight .= $subChunk->getBlockLightColumn($x, $z);
+					$skyLight .= $subChunk->getSkyLightColumn($x, $z);
+				}
+			}
+		}
+		
+		$nbt->Blocks = new ByteArrayTag("Blocks", $ids);
+		$nbt->Data = new ByteArrayTag("Data", $data);
+		$nbt->SkyLight = new ByteArrayTag("SkyLight", $skyLight);
+		$nbt->BlockLight = new ByteArrayTag("BlockLight", $blockLight);
+
+		$nbt->BiomeColors = new IntArrayTag("BiomeColors", $chunk->getBiomeColorArray());
+		$nbt->HeightMap = new IntArrayTag("HeightMap", $chunk->getHeightMapArray());
+
+		$entities = [];
+
+		foreach($chunk->getEntities() as $entity){
+			if(!($entity instanceof Player) and !$entity->closed){
+				$entity->saveNBT();
+				$entities[] = $entity->namedtag;
+			}
+		}
+
+		$nbt->Entities = new ListTag("Entities", $entities);
+		$nbt->Entities->setTagType(NBT::TAG_Compound);
+
+		$tiles = [];
+		foreach($chunk->getTiles() as $tile){
+			$tile->saveNBT();
+			$tiles[] = $tile->namedtag;
+		}
+
+		$nbt->TileEntities = new ListTag("TileEntities", $tiles);
+		$nbt->TileEntities->setTagType(NBT::TAG_Compound);
+
+		//TODO: TileTicks
+
+		$writer = new NBT(NBT::BIG_ENDIAN);
+		$nbt->setName("Level");
+		$writer->setData(new CompoundTag("", ["Level" => $nbt]));
+
+		return $writer->writeCompressed(ZLIB_ENCODING_DEFLATE, RegionLoader::$COMPRESSION_LEVEL);
+	}
+	
+	public static function nbtDeserialize(string $data, LevelProvider $provider = null){
+		$nbt = new NBT(NBT::BIG_ENDIAN);
+		try{
+			$nbt->readCompressed($data, ZLIB_ENCODING_DEFLATE);
+
+			$chunk = $nbt->getData();
+
+			if(!isset($chunk->Level) or !($chunk->Level instanceof CompoundTag)){
+				return null;
+			}
+			
+			$chunk = $chunk->Level;
+			
+			$subChunks = [];
+			$fullIds = $chunk->Blocks instanceof ByteArrayTag ? $chunk->Blocks->getValue() : str_repeat("\x00", 32768);
+			$fullData = $chunk->Data instanceof ByteArrayTag ? $chunk->Data->getValue() : ($half = str_repeat("\x00", 16384));
+			$fullBlockLight = $chunk->BlockLight instanceof ByteArrayTag ? $chunk->BlockLight->getValue() : $half;
+			$fullSkyLight = $chunk->SkyLight instanceof ByteArrayTag ? $chunk->SkyLight->getValue() : str_repeat("\xff", 16384);
+
+			for($y = 0; $y < 8; ++$y){
+				$offset = ($y << 4);
+				$ids = "";
+				for($i = 0; $i < 256; ++$i){
+					$ids .= substr($fullIds, $offset, 16);
+					$offset += 128;
+				}
+				$data = "";
+				$offset = ($y << 3);
+				for($i = 0; $i < 256; ++$i){
+					$data .= substr($fullData, $offset, 8);
+					$offset += 64;
+				}
+				$blockLight = "";
+				$offset = ($y << 3);
+				for($i = 0; $i < 256; ++$i){
+					$blockLight .= substr($fullBlockLight, $offset, 8);
+					$offset += 64;
+				}
+				$skyLight = "";
+				$offset = ($y << 3);
+				for($i = 0; $i < 256; ++$i){
+					$skyLight .= substr($fullSkyLight, $offset, 8);
+					$offset += 64;
+				}
+				$subChunks[] = new SubChunk($y, $ids, $data, $blockLight, $skyLight);
+			}
+			
+			$result = new GenericChunk(
+				$provider,
+				$chunk["xPos"],
+				$chunk["zPos"],
+				$subChunks,
+				$chunk->Entities instanceof ListTag ? $chunk->Entities->getValue() : [],
+				$chunk->TileEntities instanceof ListTag ? $chunk->TileEntities->getValue() : [],
+				$chunk->BiomeColors instanceof IntArrayTag ? $chunk->BiomeColors->getValue() : [],
+				$chunk->HeightMap instanceof IntArrayTag ? $chunk->HeightMap->getValue() : []
+			);
+			$result->setLightPopulated($chunk->LightPopulated instanceof ByteTag ? ((bool) $chunk->LightPopulated->getValue()) : false);
+			$result->setPopulated($chunk->TerrainPopulated instanceof ByteTag ? ((bool) $chunk->TerrainPopulated->getValue()) : false);
+			$result->setGenerated($chunk->TerrainGenerated instanceof ByteTag ? ((bool) $chunk->TerrainGenerated->getValue()) : false);
+			return $result;
+		}catch(\Throwable $e){
+			echo $e->getMessage();
+			return null;
+		}
+	}
 
 	/** @var RegionLoader[] */
 	protected $regions = [];
 
-	/** @var Chunk[] */
+	/** @var GenericChunk[] */
 	protected $chunks = [];
 
 	public static function getProviderName(){
@@ -51,10 +182,6 @@ class McRegion extends BaseLevelProvider{
 		return self::ORDER_ZXY;
 	}
 
-	public static function usesChunkSection(){
-		return false;
-	}
-
 	public static function isValid($path){
 		$isValid = (file_exists($path . "/level.dat") and is_dir($path . "/region/"));
 
@@ -71,6 +198,11 @@ class McRegion extends BaseLevelProvider{
 		return $isValid;
 	}
 
+	public function getWorldHeight() : int{
+		//TODO: add world height options
+		return 128;
+	}
+
 	public static function generate($path, $name, $seed, $generator, array $options = []){
 		if(!file_exists($path)){
 			mkdir($path, 0777, true);
@@ -112,47 +244,6 @@ class McRegion extends BaseLevelProvider{
 		$z = $chunkZ >> 5;
 	}
 
-	public function requestChunkTask($x, $z){
-		$chunk = $this->getChunk($x, $z, false);
-		if(!($chunk instanceof Chunk)){
-			throw new ChunkException("Invalid Chunk sent");
-		}
-
-		$tiles = "";
-
-		if(count($chunk->getTiles()) > 0){
-			$nbt = new NBT(NBT::LITTLE_ENDIAN);
-			$list = [];
-			foreach($chunk->getTiles() as $tile){
-				if($tile instanceof Spawnable){
-					$list[] = $tile->getSpawnCompound();
-				}
-			}
-			$nbt->setData($list);
-			$tiles = $nbt->write(true);
-		}
-
-		$extraData = new BinaryStream();
-		$extraData->putLInt(count($chunk->getBlockExtraDataArray()));
-		foreach($chunk->getBlockExtraDataArray() as $key => $value){
-			$extraData->putLInt($key);
-			$extraData->putLShort($value);
-		}
-
-		$ordered = $chunk->getBlockIdArray() .
-			$chunk->getBlockDataArray() .
-			$chunk->getBlockSkyLightArray() .
-			$chunk->getBlockLightArray() .
-			pack("C*", ...$chunk->getHeightMapArray()) .
-			pack("N*", ...$chunk->getBiomeColorArray()) .
-			$extraData->getBuffer() .
-			$tiles;
-
-		$this->getLevel()->chunkRequestCallback($x, $z, $ordered);
-
-		return null;
-	}
-
 	public function unloadChunks(){
 		foreach($this->chunks as $chunk){
 			$this->unloadChunk($chunk->getX(), $chunk->getZ(), false);
@@ -216,12 +307,12 @@ class McRegion extends BaseLevelProvider{
 	}
 
 	public function getEmptyChunk($chunkX, $chunkZ){
-		return Chunk::getEmptyChunk($chunkX, $chunkZ, $this);
+		return GenericChunk::getEmptyChunk($chunkX, $chunkZ, $this);
 	}
 
 	public function unloadChunk($x, $z, $safe = true){
 		$chunk = isset($this->chunks[$index = Level::chunkHash($x, $z)]) ? $this->chunks[$index] : null;
-		if($chunk instanceof FullChunk and $chunk->unload(false, $safe)){
+		if($chunk instanceof Chunk and $chunk->unload(false, $safe)){
 			unset($this->chunks[$index]);
 			return true;
 		}
@@ -246,7 +337,7 @@ class McRegion extends BaseLevelProvider{
 	 * @return RegionLoader
 	 */
 	protected function getRegion($x, $z){
-		return isset($this->regions[$index = Level::chunkHash($x, $z)]) ? $this->regions[$index] : null;
+		return $this->regions[Level::chunkHash($x, $z)] ?? null;
 	}
 
 	/**
@@ -267,8 +358,8 @@ class McRegion extends BaseLevelProvider{
 		}
 	}
 
-	public function setChunk($chunkX, $chunkZ, FullChunk $chunk){
-		if(!($chunk instanceof Chunk)){
+	public function setChunk($chunkX, $chunkZ, Chunk $chunk){
+		if(!($chunk instanceof GenericChunk)){
 			throw new ChunkException("Invalid Chunk class");
 		}
 
@@ -288,10 +379,6 @@ class McRegion extends BaseLevelProvider{
 		$this->chunks[$index] = $chunk;
 	}
 
-	public static function createChunkSection($Y){
-		return null;
-	}
-
 	public function isChunkGenerated($chunkX, $chunkZ){
 		if(($region = $this->getRegion($chunkX >> 5, $chunkZ >> 5)) !== null){
 			return $region->chunkExists($chunkX - $region->getX() * 32, $chunkZ - $region->getZ() * 32) and $this->getChunk($chunkX - $region->getX() * 32, $chunkZ - $region->getZ() * 32, true)->isGenerated();
diff --git a/src/pocketmine/level/format/mcregion/RegionLoader.php b/src/pocketmine/level/format/mcregion/RegionLoader.php
index 1b4a7eb76..acfa9823a 100644
--- a/src/pocketmine/level/format/mcregion/RegionLoader.php
+++ b/src/pocketmine/level/format/mcregion/RegionLoader.php
@@ -21,7 +21,7 @@
 
 namespace pocketmine\level\format\mcregion;
 
-use pocketmine\level\format\FullChunk;
+use pocketmine\level\format\generic\GenericChunk;
 use pocketmine\level\format\LevelProvider;
 use pocketmine\utils\Binary;
 use pocketmine\utils\ChunkException;
@@ -112,7 +112,7 @@ class RegionLoader{
 		}
 
 		$chunk = $this->unserializeChunk(fread($this->filePointer, $length - 1));
-		if($chunk instanceof FullChunk){
+		if($chunk instanceof GenericChunk){
 			return $chunk;
 		}else{
 			MainLogger::getLogger()->error("Corrupted chunk detected");
@@ -121,7 +121,7 @@ class RegionLoader{
 	}
 
 	protected function unserializeChunk($data){
-		return Chunk::fromBinary($data, $this->levelProvider);
+		return McRegion::nbtDeserialize($data, $this->levelProvider);
 	}
 
 	public function chunkExists($x, $z){
@@ -161,9 +161,9 @@ class RegionLoader{
 		$this->locationTable[$index][1] = 0;
 	}
 
-	public function writeChunk(FullChunk $chunk){
+	public function writeChunk(GenericChunk $chunk){
 		$this->lastUsed = time();
-		$chunkData = $chunk->toBinary();
+		$chunkData = McRegion::nbtSerialize($chunk);
 		if($chunkData !== false){
 			$this->saveChunk($chunk->getX() - ($this->getX() * 32), $chunk->getZ() - ($this->getZ() * 32), $chunkData);
 		}
diff --git a/src/pocketmine/level/generator/Flat.php b/src/pocketmine/level/generator/Flat.php
index a77cb5364..f9eb7ecfd 100644
--- a/src/pocketmine/level/generator/Flat.php
+++ b/src/pocketmine/level/generator/Flat.php
@@ -31,7 +31,7 @@ use pocketmine\block\LapisOre;
 use pocketmine\block\RedstoneOre;
 use pocketmine\item\Item;
 use pocketmine\level\ChunkManager;
-use pocketmine\level\format\FullChunk;
+use pocketmine\level\format\Chunk;
 use pocketmine\level\generator\biome\Biome;
 use pocketmine\level\generator\populator\Ore;
 use pocketmine\level\generator\populator\Populator;
@@ -41,7 +41,7 @@ use pocketmine\utils\Random;
 class Flat extends Generator{
 	/** @var ChunkManager */
 	private $level;
-	/** @var FullChunk */
+	/** @var Chunk */
 	private $chunk;
 	/** @var Random */
 	private $random;
diff --git a/src/pocketmine/level/generator/GenerationTask.php b/src/pocketmine/level/generator/GenerationTask.php
index d995b73eb..fd8001209 100644
--- a/src/pocketmine/level/generator/GenerationTask.php
+++ b/src/pocketmine/level/generator/GenerationTask.php
@@ -21,7 +21,8 @@
 
 namespace pocketmine\level\generator;
 
-use pocketmine\level\format\FullChunk;
+use pocketmine\level\format\Chunk;
+use pocketmine\level\format\generic\GenericChunk;
 use pocketmine\level\Level;
 use pocketmine\level\SimpleChunkManager;
 use pocketmine\scheduler\AsyncTask;
@@ -34,10 +35,10 @@ class GenerationTask extends AsyncTask{
 	public $chunk;
 	public $chunkClass;
 
-	public function __construct(Level $level, FullChunk $chunk){
+	public function __construct(Level $level, Chunk $chunk){
 		$this->state = true;
 		$this->levelId = $level->getId();
-		$this->chunk = $chunk->toFastBinary();
+		$this->chunk = GenericChunk::fastSerialize($chunk);
 		$this->chunkClass = get_class($chunk);
 	}
 
@@ -51,9 +52,9 @@ class GenerationTask extends AsyncTask{
 			return;
 		}
 
-		/** @var FullChunk $chunk */
+		/** @var Chunk $chunk */
 		$chunk = $this->chunkClass;
-		$chunk = $chunk::fromFastBinary($this->chunk);
+		$chunk = GenericChunk::fastDeserialize($this->chunk);
 		if($chunk === null){
 			//TODO error
 			return;
@@ -65,7 +66,7 @@ class GenerationTask extends AsyncTask{
 
 		$chunk = $manager->getChunk($chunk->getX(), $chunk->getZ());
 		$chunk->setGenerated();
-		$this->chunk = $chunk->toFastBinary();
+		$this->chunk = GenericChunk::fastSerialize($chunk);
 
 		$manager->setChunk($chunk->getX(), $chunk->getZ(), null);
 	}
@@ -77,9 +78,9 @@ class GenerationTask extends AsyncTask{
 				$level->registerGenerator();
 				return;
 			}
-			/** @var FullChunk $chunk */
+			/** @var Chunk $chunk */
 			$chunk = $this->chunkClass;
-			$chunk = $chunk::fromFastBinary($this->chunk, $level->getProvider());
+			$chunk = GenericChunk::fastDeserialize($this->chunk, $level->getProvider());
 			if($chunk === null){
 				//TODO error
 				return;
diff --git a/src/pocketmine/level/generator/LightPopulationTask.php b/src/pocketmine/level/generator/LightPopulationTask.php
index ffa98b947..d2acffe1c 100644
--- a/src/pocketmine/level/generator/LightPopulationTask.php
+++ b/src/pocketmine/level/generator/LightPopulationTask.php
@@ -21,7 +21,8 @@
 
 namespace pocketmine\level\generator;
 
-use pocketmine\level\format\FullChunk;
+use pocketmine\level\format\Chunk;
+use pocketmine\level\format\generic\FullChunk;
 use pocketmine\level\Level;
 use pocketmine\scheduler\AsyncTask;
 use pocketmine\Server;
@@ -32,16 +33,16 @@ class LightPopulationTask extends AsyncTask{
 	public $chunk;
 	public $chunkClass;
 
-	public function __construct(Level $level, FullChunk $chunk){
+	public function __construct(Level $level, Chunk $chunk){
 		$this->levelId = $level->getId();
-		$this->chunk = $chunk->toFastBinary();
+		$this->chunk = GenericChunk::fastDeserialize($this->chunk);
 		$this->chunkClass = get_class($chunk);
 	}
 
 	public function onRun(){
-		/** @var FullChunk $chunk */
+		/** @var Chunk $chunk */
 		$chunk = $this->chunkClass;
-		$chunk = $chunk::fromFastBinary($this->chunk);
+		$chunk = GenericChunk::fastDeserialize($this->chunk);
 		if($chunk === null){
 			//TODO error
 			return;
@@ -51,15 +52,15 @@ class LightPopulationTask extends AsyncTask{
 		$chunk->populateSkyLight();
 		$chunk->setLightPopulated();
 
-		$this->chunk = $chunk->toFastBinary();
+		$this->chunk = GenericChunk::fastSerialize($chunk);
 	}
 
 	public function onCompletion(Server $server){
 		$level = $server->getLevel($this->levelId);
 		if($level !== null){
-			/** @var FullChunk $chunk */
+			/** @var Chunk $chunk */
 			$chunk = $this->chunkClass;
-			$chunk = $chunk::fromFastBinary($this->chunk, $level->getProvider());
+			$chunk = GenericChunk::fastDeserialize($this->chunk, $level->getProvider());
 			if($chunk === null){
 				//TODO error
 				return;
diff --git a/src/pocketmine/level/generator/PopulationTask.php b/src/pocketmine/level/generator/PopulationTask.php
index a74acdeb4..869a5fa85 100644
--- a/src/pocketmine/level/generator/PopulationTask.php
+++ b/src/pocketmine/level/generator/PopulationTask.php
@@ -21,7 +21,8 @@
 
 namespace pocketmine\level\generator;
 
-use pocketmine\level\format\FullChunk;
+use pocketmine\level\format\Chunk;
+use pocketmine\level\format\generic\GenericChunk;
 use pocketmine\level\Level;
 use pocketmine\level\SimpleChunkManager;
 use pocketmine\scheduler\AsyncTask;
@@ -29,11 +30,9 @@ use pocketmine\Server;
 
 class PopulationTask extends AsyncTask{
 
-
 	public $state;
 	public $levelId;
 	public $chunk;
-	public $chunkClass;
 
 	public $chunk0;
 	public $chunk1;
@@ -45,11 +44,10 @@ class PopulationTask extends AsyncTask{
 	public $chunk7;
 	public $chunk8;
 
-	public function __construct(Level $level, FullChunk $chunk){
+	public function __construct(Level $level, Chunk $chunk){
 		$this->state = true;
 		$this->levelId = $level->getId();
-		$this->chunk = $chunk->toFastBinary();
-		$this->chunkClass = get_class($chunk);
+		$this->chunk = GenericChunk::fastSerialize($chunk);
 
 		for($i = 0; $i < 9; ++$i){
 			if($i === 4){
@@ -58,7 +56,7 @@ class PopulationTask extends AsyncTask{
 			$xx = -1 + $i % 3;
 			$zz = -1 + (int) ($i / 3);
 			$ck = $level->getChunk($chunk->getX() + $xx, $chunk->getZ() + $zz, false);
-			$this->{"chunk$i"} = $ck !== null ? $ck->toFastBinary() : null;
+			$this->{"chunk$i"} = $ck !== null ? GenericChunk::fastSerialize($ck) : null;
 		}
 	}
 
@@ -72,12 +70,10 @@ class PopulationTask extends AsyncTask{
 			return;
 		}
 
-		/** @var FullChunk[] $chunks */
+		/** @var Chunk[] $chunks */
 		$chunks = [];
-		/** @var FullChunk $chunkC */
-		$chunkC = $this->chunkClass;
 
-		$chunk = $chunkC::fromFastBinary($this->chunk);
+		$chunk = GenericChunk::fastDeserialize($this->chunk);
 
 		for($i = 0; $i < 9; ++$i){
 			if($i === 4){
@@ -87,9 +83,9 @@ class PopulationTask extends AsyncTask{
 			$zz = -1 + (int) ($i / 3);
 			$ck = $this->{"chunk$i"};
 			if($ck === null){
-				$chunks[$i] = $chunkC::getEmptyChunk($chunk->getX() + $xx, $chunk->getZ() + $zz);
+				$chunks[$i] = GenericChunk::getEmptyChunk($chunk->getX() + $xx, $chunk->getZ() + $zz);
 			}else{
-				$chunks[$i] = $chunkC::fromFastBinary($ck);
+				$chunks[$i] = GenericChunk::fastDeserialize($ck);
 			}
 		}
 
@@ -122,7 +118,7 @@ class PopulationTask extends AsyncTask{
 		$chunk->populateSkyLight();
 		$chunk->setLightPopulated();
 		$chunk->setPopulated();
-		$this->chunk = $chunk->toFastBinary();
+		$this->chunk = GenericChunk::fastSerialize($chunk);
 
 		$manager->setChunk($chunk->getX(), $chunk->getZ(), null);
 
@@ -145,7 +141,7 @@ class PopulationTask extends AsyncTask{
 				continue;
 			}
 
-			$this->{"chunk$i"} = $chunks[$i] !== null ? $chunks[$i]->toFastBinary() : null;
+			$this->{"chunk$i"} = $chunks[$i] !== null ? GenericChunk::fastSerialize($chunks[$i]) : null;
 		}
 	}
 
@@ -157,10 +153,7 @@ class PopulationTask extends AsyncTask{
 				return;
 			}
 
-			/** @var FullChunk $chunkC */
-			$chunkC = $this->chunkClass;
-
-			$chunk = $chunkC::fromFastBinary($this->chunk, $level->getProvider());
+			$chunk = GenericChunk::fastDeserialize($this->chunk, $level->getProvider());
 
 			if($chunk === null){
 				//TODO error
@@ -173,7 +166,7 @@ class PopulationTask extends AsyncTask{
 				}
 				$c = $this->{"chunk$i"};
 				if($c !== null){
-					$c = $chunkC::fromFastBinary($c, $level->getProvider());
+					$c = GenericChunk::fastDeserialize($c, $level->getProvider());
 					$level->generateChunkCallback($c->getX(), $c->getZ(), $c);
 				}
 			}
diff --git a/src/pocketmine/tile/Chest.php b/src/pocketmine/tile/Chest.php
index c924482e6..ba3e3fbe5 100644
--- a/src/pocketmine/tile/Chest.php
+++ b/src/pocketmine/tile/Chest.php
@@ -25,7 +25,7 @@ use pocketmine\inventory\ChestInventory;
 use pocketmine\inventory\DoubleChestInventory;
 use pocketmine\inventory\InventoryHolder;
 use pocketmine\item\Item;
-use pocketmine\level\format\FullChunk;
+use pocketmine\level\format\Chunk;
 use pocketmine\math\Vector3;
 use pocketmine\nbt\NBT;
 use pocketmine\nbt\tag\CompoundTag;
@@ -40,7 +40,7 @@ class Chest extends Spawnable implements InventoryHolder, Container, Nameable{
 	/** @var DoubleChestInventory */
 	protected $doubleInventory = null;
 
-	public function __construct(FullChunk $chunk, CompoundTag $nbt){
+	public function __construct(Chunk $chunk, CompoundTag $nbt){
 		parent::__construct($chunk, $nbt);
 		$this->inventory = new ChestInventory($this);
 
diff --git a/src/pocketmine/tile/FlowerPot.php b/src/pocketmine/tile/FlowerPot.php
index 099ceaeef..2a2d33668 100644
--- a/src/pocketmine/tile/FlowerPot.php
+++ b/src/pocketmine/tile/FlowerPot.php
@@ -22,7 +22,7 @@
 namespace pocketmine\tile;
 
 use pocketmine\item\Item;
-use pocketmine\level\format\FullChunk;
+use pocketmine\level\format\Chunk;
 use pocketmine\nbt\tag\CompoundTag;
 use pocketmine\nbt\tag\IntTag;
 use pocketmine\nbt\tag\ShortTag;
@@ -30,7 +30,7 @@ use pocketmine\nbt\tag\StringTag;
 
 class FlowerPot extends Spawnable{
 
-	public function __construct(FullChunk $chunk, CompoundTag $nbt){
+	public function __construct(Chunk $chunk, CompoundTag $nbt){
 		if(!isset($nbt->Item)){
 			$nbt->item = new ShortTag("item", 0);
 		}
diff --git a/src/pocketmine/tile/Furnace.php b/src/pocketmine/tile/Furnace.php
index ba7e747e9..badf8bf0e 100644
--- a/src/pocketmine/tile/Furnace.php
+++ b/src/pocketmine/tile/Furnace.php
@@ -28,7 +28,7 @@ use pocketmine\inventory\FurnaceInventory;
 use pocketmine\inventory\FurnaceRecipe;
 use pocketmine\inventory\InventoryHolder;
 use pocketmine\item\Item;
-use pocketmine\level\format\FullChunk;
+use pocketmine\level\format\Chunk;
 use pocketmine\nbt\NBT;
 use pocketmine\nbt\tag\CompoundTag;
 use pocketmine\nbt\tag\IntTag;
@@ -41,7 +41,7 @@ class Furnace extends Spawnable implements InventoryHolder, Container, Nameable{
 	/** @var FurnaceInventory */
 	protected $inventory;
 
-	public function __construct(FullChunk $chunk, CompoundTag $nbt){
+	public function __construct(Chunk $chunk, CompoundTag $nbt){
 		if(!isset($nbt->BurnTime) or $nbt["BurnTime"] < 0){
 			$nbt->BurnTime = new ShortTag("BurnTime", 0);
 		}
diff --git a/src/pocketmine/tile/Sign.php b/src/pocketmine/tile/Sign.php
index b3f2c63c7..3ec735630 100644
--- a/src/pocketmine/tile/Sign.php
+++ b/src/pocketmine/tile/Sign.php
@@ -21,14 +21,14 @@
 
 namespace pocketmine\tile;
 
-use pocketmine\level\format\FullChunk;
+use pocketmine\level\format\Chunk;
 use pocketmine\nbt\tag\CompoundTag;
 use pocketmine\nbt\tag\IntTag;
 use pocketmine\nbt\tag\StringTag;
 
 class Sign extends Spawnable{
 
-	public function __construct(FullChunk $chunk, CompoundTag $nbt){
+	public function __construct(Chunk $chunk, CompoundTag $nbt){
 		if(!isset($nbt->Text1)){
 			$nbt->Text1 = new StringTag("Text1", "");
 		}
diff --git a/src/pocketmine/tile/Skull.php b/src/pocketmine/tile/Skull.php
index bd17209ee..a65cb11a2 100644
--- a/src/pocketmine/tile/Skull.php
+++ b/src/pocketmine/tile/Skull.php
@@ -21,7 +21,7 @@
 
 namespace pocketmine\tile;
 
-use pocketmine\level\format\FullChunk;
+use pocketmine\level\format\Chunk;
 use pocketmine\nbt\tag\ByteTag;
 use pocketmine\nbt\tag\CompoundTag;
 use pocketmine\nbt\tag\IntTag;
@@ -34,7 +34,7 @@ class Skull extends Spawnable{
 	const TYPE_HUMAN = 3;
 	const TYPE_CREEPER = 4;
 
-	public function __construct(FullChunk $chunk, CompoundTag $nbt){
+	public function __construct(Chunk $chunk, CompoundTag $nbt){
 		if(!isset($nbt->SkullType)){
 			$nbt->SkullType = new ByteTag("SkullType", 0);
 		}
diff --git a/src/pocketmine/tile/Spawnable.php b/src/pocketmine/tile/Spawnable.php
index f9fb98956..b76f0a164 100644
--- a/src/pocketmine/tile/Spawnable.php
+++ b/src/pocketmine/tile/Spawnable.php
@@ -21,7 +21,7 @@
 
 namespace pocketmine\tile;
 
-use pocketmine\level\format\FullChunk;
+use pocketmine\level\format\Chunk;
 use pocketmine\nbt\NBT;
 use pocketmine\nbt\tag\CompoundTag;
 use pocketmine\network\protocol\BlockEntityDataPacket;
@@ -51,7 +51,7 @@ abstract class Spawnable extends Tile{
 	 */
 	public abstract function getSpawnCompound();
 
-	public function __construct(FullChunk $chunk, CompoundTag $nbt){
+	public function __construct(Chunk $chunk, CompoundTag $nbt){
 		parent::__construct($chunk, $nbt);
 		$this->spawnToAll();
 	}
diff --git a/src/pocketmine/tile/Tile.php b/src/pocketmine/tile/Tile.php
index aa9ef2ff3..cbe2d0300 100644
--- a/src/pocketmine/tile/Tile.php
+++ b/src/pocketmine/tile/Tile.php
@@ -26,7 +26,6 @@ namespace pocketmine\tile;
 
 use pocketmine\event\Timings;
 use pocketmine\level\format\Chunk;
-use pocketmine\level\format\FullChunk;
 use pocketmine\level\Level;
 use pocketmine\level\Position;
 use pocketmine\nbt\tag\CompoundTag;
@@ -68,13 +67,13 @@ abstract class Tile extends Position{
 
 	/**
 	 * @param string      $type
-	 * @param FullChunk   $chunk
+	 * @param Chunk   $chunk
 	 * @param CompoundTag $nbt
 	 * @param             $args
 	 *
 	 * @return Tile
 	 */
-	public static function createTile($type, FullChunk $chunk, CompoundTag $nbt, ...$args){
+	public static function createTile($type, Chunk $chunk, CompoundTag $nbt, ...$args){
 		if(isset(self::$knownTiles[$type])){
 			$class = self::$knownTiles[$type];
 			return new $class($chunk, $nbt, ...$args);
@@ -108,7 +107,7 @@ abstract class Tile extends Position{
 		return self::$shortNames[static::class];
 	}
 
-	public function __construct(FullChunk $chunk, CompoundTag $nbt){
+	public function __construct(Chunk $chunk, CompoundTag $nbt){
 		assert($chunk !== null and $chunk->getProvider() !== null);
 
 		$this->timings = Timings::getTileEntityTimings($this);
@@ -163,7 +162,7 @@ abstract class Tile extends Position{
 		if(!$this->closed){
 			$this->closed = true;
 			unset($this->level->updateTiles[$this->id]);
-			if($this->chunk instanceof FullChunk){
+			if($this->chunk instanceof Chunk){
 				$this->chunk->removeTile($this);
 			}
 			if(($level = $this->getLevel()) instanceof Level){