You need:

• an iPad >= 4.2.1
• node.js
• socket.io (server + client)

Test URL (sorry the socket server won't be online all the time): http://cubiq.org/dropbox/sb/ Lock the device rotation before trying. What you'll see is a red ball you can crontrol by tilting the iPad. If other users are connected you'll see them as grey balls. Communication happens thanks to websockets.

Not ready for production, this is just a proof of concept.

To-do:

• would be nice to add collision detection between balls.