Google is hogging the tech limelight this week thanks to the flashy new virtual reality and wearable technology shown off at the I/O developers conference, but Microsoft has an ambitious experimental entertainment system you should also be paying attention to: Project IllumiRoom.

The system, which has been in the works for several years now, is built entirely from affordable, readily available electronic components, including a video projector and a Microsoft Kinect. It works by using the Kinect to scan your living room to locate your TV set and furniture, then uses the projector to extend whatever visual media is playing on your TV set to the entire room around you. Among the many eye-catching things Microsoft imagines you'll do with such a system: cower from virtual grenades rolling out of your TV set and onto the floor of your living room.