There are two players, red and green. Red controls with the wasd keys, and green uses the arrow keys keys. Each player starts with three lives. Press the space bar to start, and the space bar to pause. Players loose lives when hit by a dodgeball. The player to keep his lives longer wins. When a player reaches the top of the screen, he gains one life, and both players reset to the bottom of the screen and you must press space to resume. However when they reset to the bottom, there are more dodgeballs!