There are some rules you have to follow: 1. Players must serve the ball before the ball hits the ground twice. 2. After the serve, players must hit the ball so that it does not hit the ground before it hits the front wall. 3. When a players hits the ball against the front wall, it is the other player's turn to return the ball. 4. The other player must hit the ball before the ball bounces twice on the ground. 5. The back wall is out of bounds. You must hit the ball before it hits the back wall.