Prepare to defend your space colony against bullets! Your colony only has 5 lives. Waste all your lives and your colony gets destroyed. With the introduction of levels you can now see how far you are willing to go to protect your colony. In every level you get 5 lives. The more levels you pass the faster and crazier the bullets get. Or if you want to relax you can play the endless mode where you have 5 lives and endless amounts of bullets.