Way back in December last year, Minecraft developer Notch participated in a 48-hour game-programming competition, and he live-streamed the whole thing. He made a Harvest Moon-inspired zombie game, tentatively titled Minicraft. He has renamed that game MiniTale, with more info to come here and here.
Update: It's the sequel to Minicraft that Notch has renamed MiniTale. We apologize for the small confusion.