Java Edition Classic 0.0.12a

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Classic 0.0.12a.jpg

Java Edition

Release date

May 19, 2009


Client not archived
No corresponding server

0.0.12a[1] was a version of Classic released on May 19, 2009, at 22:36 UTC.[2][note 1] It added bedrock, water and lava, along with a world border and a new world generator.



Bedrock JE1 BE1.png Bedrock
  • Unobtainable to the player.
  • Initially referred as "unbreakable stone".
  • Bedrock and the layer above (if at the bottom of the world) is always dark even if exposed to the sky.
  • Cannot be broken, placed against or otherwise selected.
Water JE1 BE1.png Water
  • A type of liquid.
  • Does not drown the player.
Lava Revision 1.png Lava
  • A type of liquid.
  • Does not deal damage to the player.

World generation[edit]

World border
  • An infinite ocean now surrounds the map.
  • The player can no longer pass the edge of the map.


  • Pressing F cycles between four levels of render distance.[3]
  • Pressing N generates a new level.[3]
  • Only applies to players. Humans move at full speed in water.



Steve Revision 1.png Humans
  • No longer get reset on level reset, meaning there is no way to get rid of mobs now.[4]
  • Water and lava now flow to fill any available space below or next to it.[5]
    • With just one water source the entire world will be flooded.[6]
  • Water next to lava produces stone.

World generation[edit]

New level generator
  • Terrain is more messy with more bumps visible on the surface.
  • Lakes occur when the surrounding water is at a higher level than the terrain.
  • All dirt with access to sunlight will not become grass upon world generation if below water level.
  • Lava lakes also spawn occasionally.
  • Surface dirt layer is more uniform.
    • There is almost always a layer of grass with dirt under it above stone.
    • Cliff faces can no longer be made of pure dirt and grass.
  • Worlds made before this version will receive a bedrock layer at the bottom of the map and an ocean surrounding it.


  1. While some sources imply that this version was released on May 20, due to timezones differences it was actually released at 22:36 UTC on May 19 (which is 00:36 on May 20, Sweden time).


  1. "0.0.12a is up"The Word of Notch, May 20, 2009
  2. "TigIRC logs" (archived) –, May 19, 2009, UTC–4. "(18:36:09) notch: 0.0.12a is up. Water, lava, new map generation,rendering distance toggle"
  3. a b "Minecraft (alpha)" – TigSource, May 19, 2009. "F to change draw distance. There are four settings. The fourth setting makes the game run at 50 fps on my Eee, but it's a bit.. claustrophobic. N to generate a new level. No more restarting the applet!"
  4. "TigIRC logs" (archived) –, May 19, 2009, UTC–4. "(18:39:43) <notch> oh, they don't get reset on level resets either.. I'd better fix that."
  5. "Minecraft Water test" – Nizzotch Archive – via YouTube
  6. "Minecraft Huge flood" – Nizzotch Archive – via YouTube