Danc has created a game concept that is inspired by the reactable - an electronic musical instrument with a tabletop mult-touch interface. I'm quite intrigued with the idea of the game as a compositional device; it fits nicely into the niche carved out by innovators like Elektroplankton. In Danc's game idea, one places planets with assigned functions in a musical battle to take over a galaxy. A video example of the reactables interface in action is here