Retro Black & White Game Pack
It started out as a project to try the XNA platform. The idea was to write a fun app which I could then deploy on the Windows marketplace. After finishing it for Windows Phone 7 I was working with Java for another project and I thought it would be interesting to also familiarize myself with Android. This is why I ported the game to android.
Porting the game was fairly easy besides a few details: I wanted to support more resolutions and I had to write a simple game engine to replace XNA.
In the end the Windows Phone 7 version was written using C# and the XNA framework. The Android version was written using java and the Android SDK.
The resulting applications can be found on the Windows and Android marketplaces:
Retro Black & White Game Pack for Windows Phone 7 (full game & free trial)
Retro Black & White Game Pack for Android (full game)
Retro Black & White Trial Pack for Android (free trial)