Comment Re:Any movement away from Microsoft is good. (Score 5, Informative) 564
http://xamarin.com/
Here's a good place to start:
http://hanselminutes.com/362/ios-and-android-apps-with-xamarin-studio-20-and-miguel-de-icaza
There are examples of games with of 95% code re-use across Windows Phone, iOS, and Android.