Have each player stand in one of the four corners. The ‘ace’ is square one and they start the serve. Serve the ball by bouncing it in your square once. Then hit it to the second square. Make sure that the ball stays within the other square and is not outside or on any of the lines. Hit the ball back. Receivers must hit the ball back to any other player. Continue playing until a player hits the ball out of the square or it bounces twice in the player’s own square. This makes the player out. Shift the player who is out to the lowest level unless there is a line of people waiting to play. the person out will go to the end of the line and the next person in line will take that persons place. When a player is out everyone moves up one square.