Java Edition Classic 0.0.23a 01

0.0.23a_01 is a version of Classic released between July 11 and 12, 2009. This version is unavailable in the launcher. It is the last version of Multiplayer Test.

Trivia

 * Notch planned to rename the version system after this version, removing the second zero and the "a". As an example, since this was the most recent version at the time, "0.0.23a_01" would be called "0.23_1" with such a system. However, this version was never actually given this name outside of this example.
 * Would follow the format ".[_]".
 * This format was also used somewhat in Beta.