The objecitve of the game is to roll the ball and knock over the other oponents pin. Knocking over a pin scores one point. Knocking all 5x or 10x pins scores you 5 or 10 points (strike). If playing against the computer, you can choose the difficulty from easy, medium and hard. You can also choose how many pins to have 5 or 10. Or you can also play against a friend.