Protector

Earth is threatened by asteroids. You are inside "Protector", a satellite which runs in orbit around earth and you must shoot asteroids with lasers in order to protect your home planet. If too many asteroids hit the planet it is game over. The ultimate goal in the game is to accumulate a high a score as possible. Shooting asteroids in a row adds bonus points. Pickups might appear which can be collected to provide your satellite with a temporary shield.