Fly through space as a star fighter, shooting down alien ships using lasers and upgrade your ship. Destroy enemies while collecting bonuses and power-ups. It seems like the whole galaxy is after you. Shoot down the various squadrons of enemy ships and watch as the prizes rain down from above.

If you played asteroids this is a better version. Shoot the asteroids while avoiding collisions with them. Intermittently a flying saucer will appear and attempt to shoot you down with guided missiles. Destroy it or the missiles for more points.

Just a shoot 'em up. Defend the planets. Do not allow the UFOs to hit them with their plasma-balls and do not let them collide.