I managed to make a live wallpaper with cocos2d-x. I still run into a few issues from time to time, but it works pretty well. The character reacts to touch and smartphone movement.
Upcoming feature : personalization, more interactions ect…
Google Play Store : http://goo.gl/w8Crvd
Youtube Vidéo : http://youtu.be/o4LOeGUom-o