Alpha v1.0.0 was the first Alpha version of the game, released on June 30, 2010.[1] It was originally labeled as "Minecraft Infdev" at the top left corner while playing in a world;[2][3][4]Notch retroactively decided this version would be named Alpha v1.0.0 upon the release of Alpha v1.0.1.[5]
On June 29, 2010, about 19 hours before the official release, there was a downloadable version to test the offline client.[6]
Additions
Added wooden and cobblestone stairs, which currently lacks a proper inventory model.
1.0