RubyDung

RubyDung was a game created by Notch before Minecraft. Not much is known about the game other than it is influenced by Dwarf Fortress. Notch wanted to have some of the graphics that were in RubyDung and placed them in Minecraft. These were the Grass textures and the Cobblestone textures. The game later made Notch think more about blocks as he played Infiniminer that then made him think more about a building game that later began to turn into Minecraft.

On October 30th, 2009, Notch talked about RubyDung on his blog in an entry entitled The Origins of Minecraft.