Minecraft wiki entry for Legend_of_the_Chambered, associated text: Despite quitting the original game, Notch made other games under the title Legend of the Chambered and a prelude, Prelude of the Chambered (PoC). PoC was created for the Ludum Dare 21 game jam in August 2011. Along with his other LoC titled games, Prelude of the Chambered is significant as some of the ideas in them helped shape what Minecraft became.