Apple iPhone Apps writes:
"Space Ninja is a gem of a game that combines a tried and true gameplay concept - dodging bullets with a spaceship - and some of the best feeling controls on the iPhone to date. With fantastic music, a perfunctory story, and 40 levels, this game should be in most gamer's App libraries. Essentially all you have to do is tilt your iPhone to control your ship and avoid the bullets that, at times, fill the screen. This is harder than it sounds, but various powerups and the ability to slow time will make things a little easier."