Conway's Game of Life
Conway's Game of Life — a zero-player cellular automaton. A live cell with 2 or 3 live neighbors survives; a dead cell with exactly 3 live neighbors is born; all else dies or stays dead. Click cells to draw, then step or run. Everything runs locally in your browser.
Patterns
The Game of Life is a two-state, two-dimensional cellular automaton devised by John Conway in 1970. From four simple rules on an infinite grid emerge oscillators, spaceships, and even Turing-complete computation. A live cell survives with 2–3 neighbors (else death by isolation or overpopulation); a dead cell is born with exactly 3 neighbors. The blinker oscillates with period 2, the block is a still life, and the glider travels one cell diagonally every 4 generations. With wrapping on, the grid is a torus. Pairs with the Maze Generator and Markov Chain tools. Everything runs locally — nothing leaves your browser.