Java Edition Alpha v1.0.0

Alpha 1.0.0 was the first Alpha version of the game released on June 30, 2010. It was wrongly labeled as "Minecraft Infdev" at the top left corner while playing in a world, since Notch only decided this version would be Alpha 1.0.0 upon the release of Alpha 1.0.1.

Two days before its official release, there was a downloadable version to test the offline client.

Additions

 * Added wooden stairs and cobblestone stairs.
 * Wooden stairs use the ID (53) of the previously removed infinite lava source block.