Java Edition Classic 0.0.12a

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This version is currently missing.
While this version is known to exist it is missing from the launcher and has not been archived elsewhere, meaning that it is currently lost.
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Classic 0.0.12a.png

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]



  • 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
  • Lava Revision 1.png Lava
  • Water JE1 BE1.png Water


  • An infinite ocean now surrounds the map.
    • The player can no longer pass the edge of the map.
  • Pressing Esc now opens the pause menu.
  • Pressing F cycles between four levels of render distance.
  • Pressing N saves the current level as a level.dat file.
    • Only saves the level if the world changed since the last save.


  • Water and lava now flow to fill any available space below or next to it.[3]
    • With just one water source the entire world will be flooded.[4]
  • Water next to lava produces stone.
World Generation
  • Worlds made before 0.0.12a will receive a bedrock layer at the bottom of the map and an ocean surrounding it.
  • 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.
      • Almost always there is a layer of grass with dirt under it above stone.
      • Cliff faces can no longer be made of pure dirt and grass.
  • Mobs no longer get reset on level reset, meaning there is no way to get rid of mobs now.[5]


  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. "Minecraft Water test" – Nizzotch Archive – via YouTube
  4. "Minecraft Huge flood" – Nizzotch Archive – via YouTube
  5. "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."