Oscar just sent a link to a post on his blog, including the video below, showing the final moments of configuring the latest paralevel at Arteleku...

Basically what you see is the reddish cube controlling a custom gamelevel (projected on the ceiling) via camera tracking (using the excellent Gamuza), and additional navigation done via a 3D accelerometer (hacked Nintendo Nunchuck + Xbee's). I'll post some more detailed info on the build process and tech setup soon...