In Crazy Tennis Online, your life depends on your tennis skills. Not just that, the entire planet is depending on you for survival. Win each tennis match or the alien space ship that has landed on the tennis court will incinerate you! Move your character with the arrow keys and press the space bar at the right moment to take a swing at the ball. Choose the difficulty level you want to take on, and beat the space creatures in this crazy tennis championship! Can you predict where the ball will go and outplay the alien invaders?