If you want to experience this yourself, it's not available in the standard Minecraft Launcher, but community efforts like the Omniarchive
Looking back, 0.30 is an unpolished gem. But almost every major system in modern survival games traces directly back to this unstable December 2009 build. minecraft survival test 0.30
: It served as the last build before Notch transitioned to the Indev cycle, which introduced crafting and a proper inventory. Unique Gameplay and "Bizarre" Mechanics If you want to experience this yourself, it's
Here is the feature set that defined 0.30: minecraft survival test 0.30