...but iphone has 2.5% of the phone market, ~17% of the smartphone market and nothing on any of the consoles or handhelds when it comes to game sales (ie. above free) or revenues...
Even the PSP software market is massive in comparison to the market for gaming apps.
A game I'm developing with some friends:
www.xnagg.com/zombieasteroids/publish.htm
It is largely a technical exercise but feedback is appreciated.