Google - Cube Slam
Making games are fun. Making games that uses new, amazing, technologies are even more fun!
Cube Slam is a multiplayer game with tons of extras and levels while using DataChannels to shuffle game data over an in-browser peer-to-peer connection and the getUserMedia API to let players play face to face against their friends.
Do you want to play on your mobile? No problem. Play the CSS3D version in Chrome on Android or on iOS.
Good luck beating Bob, you'll need it!