Use the up, down, right, and left keys to move your tennis player (left), and if you want a challenge, use the w and s keys to move the ball thrower (right). The point of the game is to get the tennis player to get the balls with her racket. A ball will automatically appear every 15 seconds. If you miss them, you lose a point. And the balls do speed up, so be prepared... And, if you want multiple balls, press the space key. Also, do not touch the top of the fence in the background... Or you will lose 2 points.