I went to the ADVANCE Hackathon in Cologne, Germany last weekend and this is a project I created together with @snnd and @newmetl. We used node.js and socket.io in the backend and HTML5 + JS in the frontend.
The rules are simple: Make your and your teammates' gaming pieces fit into the highlighted area without talking to your mates.
The levels are generated randomly, so they might be too easy or too hard from time to time. I'd like to emphasize that this game has been created within less than 24 hours!
http://fititgame.com/ http://hackathon.advance-conference.com/
Feedback and criticism are appreciated! :)