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Minecraft Wiki
Minecraft 13w16a
Java Edition 13w16a.png

Java Edition



Release date

April 18, 2013

Snapshot for



Original client (.json)
Reupload 1 client (.json)
Reupload 2 client (.json)
Server (.exe)

Protocol version


13w16a is the first snapshot for Java Edition 1.6.1, released on April 18, 2013.[1]

13w16a was reuploaded twice around an hour after release.



  • Carpets are made using 2 of the player's desired colors of wool in a horizontal line
Hay Blocks
  • Can be placed in all orientations, just like wood.


Horse armor
  • Exist in diamond, iron and gold variants.
  • Crafted with six iron/gold/diamond and a wool block.
Horse Saddle
  • Stack to 32.
  • Crafted with five leather and three iron ingots.
  • Can be used to bind mobs to fences or lead them around.
  • Right-click mob first, then right-click fence or right-click the mob again to get the lead back.
Horse spawn egg
  • When used, a different horse breed is created each time.
  • Works like any other spawn egg.


  • Like horses, but can carry chests on their back although no inventory is currently available.
  • Can be bred with horses to make a mule.
  • Ridable by right-clicking them, move with usual movement keys, maximum speed, and jump height differ between horses.
  • Have various amounts of maximum health, use wheat and carrots to heal them.
  • Drop leather when killed.
  • Can be bred using wheat – baby horses can be grown using apples, golden apples, wheat, and hay bales.
  • Players can make them jump by pressing and holding the space bar.
  • They naturally step up over 1 block, which enables you to walk up hills.
  • They can also use ladders, when steered towards them.
  • Creation assisted by DrZhark (Creator of the Mo' Creatures mod).
  • There is an undead and skeleton version of the horse included in the code, although they require NBT editing to view in-game.
  • Mules can be obtained by breeding a donkey and a horse.



  • Changed the idea of mob difficulty.[2]
    • Regional difficulty: The longer the player stays in one area, the harder it gets.
    • Scales with difficulty – Items, enchants or AI improve with difficulty.
Game window
  • Now displays the client's version in the window title.
  • Example: "Minecraft 13w16a"


  • Improved Respiration.
    • Now also helps seeing underwater (this depends on the enchantment level, ranging from 1–3).
  • Add mob's health bar to the Heads-up display when riding on it (both pigs and horses).
  • When riding something, like a mob or a boat, dismounting is only possible using the Sneak key, ⇧ Left Shift by default.


  • Added Mo' Creatures developers to credits.txt.
Directory structure
  • .minecraft directory structure is changed:
    • assets folder; stores resources such as language packs and sounds.
      • All music discs now use .ogg format instead of .mus format.
    • library folder; stores Java libraries such as LWJGL and jinput.jar.
    • versions folder; there are files version.json (meta data) and folders that stores minecraft.jar for each versions (but its name is the same as its version; the jar for 13w16a is versions/13w16a/13w16a.jar).


  • This is the earliest snapshot available in the Minecraft launcher. Although earlier snapshots are not available in the launcher, they are archived.
  • This is the first snapshot which could launching with Java 9 or higher.


6 issues fixed
From released versions before 1.6.1
  • MC-3090 – Unable to play game unless LWJGL is manually replaced.
  • MC-4253 – Endermen are rendered hostile if they take environmental damage.
  • MC-5674 – Client can control if they take damage and abuse this / ALT or F10 freezes client in windowed mode.
  • MC-11229 – Using the anvil for free.
  • MC-12017 – Can get permanently stuck in a minecart in a nether portal.
  • MC-12369 – Minecraft crashing on 1.5.1 prerelease server.