The Game of Life is a zero player game whose evolution is determined by its initial state. The game is set by creating an initial configuration by clicking on specific cells or choosing from a preset pattern. When the game is started, the state of the cells will live or die according to a set of rules. (wikipedia)
Rules
Any live cell with fewer than two live neighbours dies.
Any live cell with two or three live neighbours lives on to the next iteration.
Any live cell with more than three live neighbours dies.
Any dead cell with exactly three live neighbours becomes a live cell.