Recently released proof of concept augmented reality game for android wear smartwatches (totally free – no in-app purchases or ads). Shows what can be done by using watch screen backgrounds (and associated tracking points) to display augmented reality games and various other content over the watch face. Augmented reality smartwatch apps could open up a whole new realm of possibilities for the smartwatch form factor.
Link to App: https://play.google.com/store/apps/details?id=com.thirteen.tilt
Link to App: https://play.google.com/store/apps/details?id=com.thirteen.tilt