Unidentified Feline Obliterators

In the middle of space, there exists UFOs (Unidentified Feline Obliterators). They propel themselves with deadly balls of matter. Their natural predators are the jetpack dogs, treadmill porcupines, and rocket rats. But what else is out there in space out to get these cats?Key features:Move in one direction, and fire in the opposite direction!4 people can play using a single keyboard, or use controllers!Unlimited waves of enemies to face off against!Compete on leaderboards for the hi-score!