My group friends and I just finished the term project for Interaction Design course. We had a big expo and get to share our project with other people.
What we did was a twister game only you play it standing and trying to touch virtual spots on the air 
It is as fun as it sounds ! A lot of people played our game in the exhibition and they enjoyed it so much. I programmed the game itself rather than the technology used to detect bodies with infrared cameras.
The best thing is that the project worked out just like we imagined almost for every phase.
The formal definition of the project Body Blob:
Body Blob is an installation that tracks a player’s body and makes it part of the an interactive game. The player has to use his body image to cover certain circles on the screen in order to gain points. The game supports multiplayer mode. The levels behind the game have been created in order to make players test their physical flexibility. At the end of the game, we give the opportunity of taking away a stop-motion short movie of yourself doing different poses.
And here is the link to our project website.
And here I am the red one, competing with a friend, getting beaten so bad on my own game
