Minecraft wiki entry for RubyDung, associated text: RubyDung was an unreleased strategy game created by Notch before Minecraft, developed until May 2009 at the earliest.[note 1] Not much else is known about the game other than it was influenced by Dwarf Fortress, and that it was cancelled early in development, before it was even released. Notch's next game would be Minecraft (later known as Minecraft: Java Edition), which is based on RubyDung's codebase.