In this classic looking game, your misssion is to defend the cities below you while fighting off all of the aliens above. This game gets very challenging when a few enemies fire at once and you have to juggle between them. After an enemy has fired, you can bounce the missiles back, the missile will turn blue. When a missile is blue, you can detonate it at any time to blow up more aliens. To play, use the ARROW KEYS to move. Hit the SPACEBAR when you want all of the blue missiles to detonate. How long can you defend the city? Good luck!