Like a Redstone Cowboy

neonsignal writes "Machine creations in Minecraft are becoming increasingly complex as people build on each other's ideas. Some notable examples include a Rubik's cube simulator, a 5-channel music sequencer, a 3D color printer, a 16-bit processing unit, and Conway's Game of Life. My own recent contribution is the world's slowest Universal Turing Machine. I'm now waiting for someone to implement Tetris in Redstone logic."