Reverse Shootem'up 
This is an interesting twist on the familiar arcade game where you fly a ship and destroy the enemy base. Instead of playing the fighter jet, space ship, or bomber jet, you play the base in the Inverse Shootem'up. You fire your cannons, send in your attack squadron, and try to destroy the lone supership before it destroys your mothership. The normal setting isn't too bad, but it gets mighty tough after that. That fighter is one tough ship.