HoverBugz is a kinect PC racing game that I developed at SRT Solutions as a display for our CodeMash 2012 booth. The game is open source but a Kinect and a few freely available libraries are required to play it. HoverBugz can support up to four people using a second computer to handle a second Kinect's input, since a single Kinect/PC combination is limited to detecting two skeletons.
SRT has been involved in the Ann Arbor Hand's On Museum's Tech Twilight event, so in 2012 we decided to create another game based on the HoverBugz code that could act as a museum display. In Blood Drive players pick up oxygen bubbles in the lungs and take them to the brain to drop them off.