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Java Edition

Server version


Release date

July 11, 2009


Client not archived

Protocol version




0.0.23a was a version of Java Edition Classic released on July 11, 2009, at around 14:16 UTC.[1][2]


Options menu
  • Customizable controls.[3]
    • Controls can be edited by navigating through the pause menu opened by pressing Esc.[3][4]
    • Players can no longer move with the arrow keys by default
    • Pressing F no longer toggles the render distance.[5] as it is now set as an option.[6]
  • There are now separate options to turn off sound and music.
  • FPS meter removed unless the "Show FPS" option is set.[7]
  • Clicking a player's name under the Tab menu pastes their name into the chat.[8]


  • Changed texture for menu buttons.
  • Sand and gravel no longer 'fall' down atop water or lava as if it were a solid block.
    • Instead, they will fall through the liquid, and the liquid will replace the location where the block was placed.
    • This liquid was stationary but will flow once updated.
  • Pressing the ⊞ Windows key will no longer allow for jumping.


Classic 0.0.23a has the highest minor version number of all Java Edition versions, at "23". The highest in Java Edition Alpha is "17", with Alpha v1.0.17; the highest in Bedrock Edition is "221", with 1.16.221; the highest in Bedrock Edition development versions is "230" with 1.16.230 betas; and the highest in the full release of Java Edition is "10", with 1.7.10.


  • IRC logs on Archive.org; #minecraft.20090711.log. July 11, 2009 (UTC−5).
  1. "Back in the saddle, client 0.0.23a is out" – The Word of Notch, July 11, 2009
  2. IRC logs: "A9:16:20 * Notch changes topic to 'http://www.minecraft.net | Client 0.0.23a is out with new options and the ability to remap keys" (14:16:20 UTC)
  3. a b IRC logs: "A9:16:30 <Rock_D> huh, options?", "A9:16:39 <Adura> Via Esc" [...] "A9:28:01 <CheeToS> I like the new esc menu buttons" (14:16 to 14:28 UTC)
  4. IRC logs: "A9:16:47 <PuyoDead> hey, I like the new buttons" (14:16:47 UTC)
  5. IRC logs: "A9:21:23 <PuyoDead> wait, does F still do that as well?" [...] "A9:21:32 <CheeToS> PuyoDead: no" [...] "A9:22:36 <PuyoDead> awwww... I really, REALLY needed that key for render distance." (14:20 to 14:22 UTC)
  6. IRC logs: "A9:20:06 <CheeToS> Notch: aw man, you removed the varying render distances? I found it EXTREMELY useful :\" [...] "A9:20:18 <08Notch> no, it's still there!" [...] "A9:20:26 <08Notch> under options, though" (14:20 UTC)
  7. IRC logs: "A10:37:40 <Quatroking> where's my FPS counter", "A10:37:46 <citricsquid> escape > options" (15:37:40 UTC)
  8. "Back in the saddle, client 0.0.23a is out" – The Word of Notch, July 11, 2009