During its big Windows 10 Devices event in NY, Microsoft demonstrated some mixed reality gaming on the HoloLens. The code name is currently Project Xray, and it turns every room of your house into a personalized video game level. HoloLens can detect your arm and overlay it with holograms, robots will burst through your wall, and you'll even be able to hold and wear the holograms.
Full story from the WindowsCentral blog...