Minecraft Wiki
Minecraft 13w04a
13w04a Banner.png
Java Edition 13w04a.png

Java Edition



Release date

January 24, 2013

Snapshot for



Client (.json)
Experimental client
Server (.exe)

Protocol version


13w04a is the sixth snapshot released for Java Edition 1.5.[1]

An experimental version of 13w04a was released by Dinnerbone on Mojira to try and fix a white line bug.[2]



  • Mobs now show the name given to them, either by anviling on their Spawn Egg or external editors, above their head when the player looks directly at them within a circular 6 block radius.

Command format[]

  • A new command feature.
  • Not 100% done yet.
  • The scoreboard can be used to track deaths, players killing another player, players killing something a mob, or players activating commands.
  • The complicated system uses a combination of name, display name, and criteria, and track an integer number of points for players.



Command blocks
  • Now use their name instead of @ in the chat.
  • Now can face in all directions.
  • Now equip players with armor from one block away.
  • They now activate TNT.
  • They now use bone meal.
  • They now use flint and steel.
  • Now can face in all directions.
Redstone Comparators
  • Can now be used with jukeboxes.
  • Output signal strength relates to the disk number.
  • 43:8 will now be the "smooth stone full half-slab block" and will remain so.
  • Generally: If the top bit is set, the top texture will be used on all sides, also allowing for smooth sandstone full half-slab blocks (43:9).


  • Held armor can be equipped by right-clicking.
    • In this particular snapshot, this functionality is very faulty, prone to crashing and incorrect slot usage.
    • It will be fixed in the next snapshot.
  • No longer gives instant growth – instead, each use advances one growth stage:
  • Gives off green particles when used.
  • Note: Dinnerbone has stated that he still has to balance out this new bonemeal growth system.[3]


  • Mobs will not actively path over rails.


  • The player can now hit mobs/players from five blocks away.


26 issues fixed
From released versions before 1.5
  • MC-127 – Piston extended and retracted at the same time.
  • MC-195 – Flowing water still drags the player while flying.
  • MC-515 – Chest glitch that lets them appear as if they are opened while they are not.
  • MC-519 – Achievements lost after update.
  • MC-562 – Breeding cows can consume more than one wheat.
  • MC-835 – In the server log, /say commands performed by the server do not appear to be in the console but do appear to the players.
  • MC-1914 – Mob spawners sometimes show up as pig spawners.
  • MC-2503 – Boats and minecarts should not be dropped in Creative.
  • MC-3316 – Armor enchantments (besides Thorns) have no effect on mobs.
  • MC-3981 – Dispensers no longer dispense item through blocks in the downward direction.
  • MC-4052 – Powered redstone mechanisms react to change in redstone power level.
From the 1.5 development versions
  • MC-5742 – Redstone signals shortened by devices that output a shorter signal.
  • MC-6069 – Server loading issue.
  • MC-6118 – Monostable circuits only work in a North/South configuration.
  • MC-6228 – Hopper doesn't accept items from second slot when container has different items in first slot.
  • MC-6486 – Variable redstone strength causing strange update behavior.
  • MC-6779 – Particle effects are messed up again...
  • MC-6851 – Doorhandle position is in the wrong place.
  • MC-6906 – Chest minecart won't deposit items in hoppers while moving.
  • MC-6952 – Iron door stays powered when retrieving the redstone block.
From the previous development version
  • MC-7619 – If a minecart with hopper falls into the Void, the game will crash.
  • MC-7627 – Changing the texture pack in game renders strange.
  • MC-7663 – Hopper minecart behaves like they are on powered activator rail if they never touched one.
  • MC-7668 – Using pick block on Minecart with TNT or hopper gives you just a minecart.
  • MC-7940 – Wrong death message of renamed mobs spawned by dispensers.
  • MC-8042 – Minecart with hopper is not placed on rail.