multitetris.com
multitetrisMultitetris is cooperative multiplayer tetris on a multitouch table. Move and turn the pieces with your hands. or your elbows. or your ears. Pass them to your friends. steal them from your enemies. Stack them up in midair. teleport them into your glowing architectural masterpiece. The higher levels have. With one to five blocks. crazy pieces! Multitetris was written for the 26C3. Multitouch hackfest at c-base. Mostly on january 3, 2010 with several improvements the next day.
http://www.multitetris.com/