N.O.V.A. has stunning graphics that are some of the best I've seen on the iPhone. Everything is highly detailed-from intese space battles to lush landscapes full of atmosphere- N.O.V.A. is a very pretty game. The sound effects and music are top notch as well. The game ran silky smooth on the iPhone 3GS model and surprisingly, even ran fairly well on the 3G.
N.O.V.A. is one of the best games for the iPhone yet. If you like FPS games you'll definitely want this $7 gem.