I was looking for the game engines for a 2D games in Android, and some Live Wallpaper helpers and I found a list of engines here:
For now I have tested two of them: libgdx and AndEngine. AndEngine is pretty cool but I’m not sure what will happen to it when the main developer left it for Zynga. Yes, I see that he is still commiting, so I hope he will still work on this OS engine.
Live Wallpaper extension is also really cool.