The classic cube puzzle as a live wallpaper! Play it or just have it spin in the background! Uses the gyroscope so you can shake it up to mix up the cube or to look at the other sides to solve it. Takes a little bit of patience because you should have a clear homescreen to avoid opening applications. Also, take it slow when you drag horizontally so you want switch screens. I plan to try to make a way to lock the screen or launch the cube as a standalone game with a gesture or from the app drawer.
If you like this, you might want to check out Wall Flowers.