I was talking with a friend today who has a colleague who wrote his first iPhone app. It's an enjoyable "space invaders" style game with a unique style of play.
You tap the screen to move your space ship to where you want along the bottom of the screen. This causes your ship to automatically fire as well, so you have to time your taps well in order to avoid shooting the good guys accidentally.
Stop the invaders reaching Earth, avoid shooting your friends, and all for only 99¢. Pretty enjoyable, semi addictive and something different. It's called Eternal Invasion,click here to download:Eternal Invasion - Tyron Filgate