In the case of Minecraft, Notch began coding the "Cave Game" (the original prototype) in May 2009. The first known named version is rd-132328 (June 14, 2009), where "rd" stands for "RubyDung," an earlier isometric test.
In the community's fictional lore, Alpha 0.0.0 is often described as a "lost" or "corrupted" build that predates the official Cave Game or Classic versions. It is frequently associated with: alpha minecraft 0.0.0