A zero-player game on an infinite grid. Four rules. No pieces. No objectives. Pure emergence — and one of the most profound demonstrations of complexity arising from simplicity ever devised.
▶ Open Interactive DemoSet on an infinite two-dimensional grid of square cells, each cell is either alive or dead. Each generation, every cell applies the same four rules based solely on its eight neighbors. No central controller. No external input. Yet from these rules springs an endless parade of structures — gliders that travel forever, oscillators that pulse, guns that fire streams of spaceships, and configurations so complex they can compute anything a computer can.
The Game of Life is not a game in any traditional sense. Conway called it a "zero-player game". You set up an initial configuration and watch. The rules do the rest.