Here is an AR zombie game I rapidly prototyped out in unity3d combining the Vuforia user defined targets example and the Unity survival shooter tutorial. This was inspired by Ewok Rampage and the amazing PTAM Slam work. I'm looking forward to further gamify this game and ship it on IOS/ Android/ Tango. Video Games are very cool when you play them in the physical space, and am excited to dedicate some significant time in the next five years to this idea..