Conway's 'Game of Life' is a game played on a grid of tiles, each tile black or white (as depicted to the left). Black is alive, white is dead. Each turn, any living square that is surounded by less than two living neighbors dies or turns white. Any living cell with two or three living neighbors is safe for the next turn. Four or more living neighbors and the tile dies from overcrowding. But any dead cell with three living neighbors comes to life. These simple rules of black and white generate surprising complexity.