Does not work on a Thinkpad T410 on Arch Linux.

With Chrome I can see the marble but it doesn't move, with Firefox 4 nightly I can't even see the marble.

``Sorry, this experiment only works in Chrome.'' -- feels like 1990's all over again.

Of course it's not that bad -- it uses cutting-edge features and those may find their way into competing browsers in a few months. So there is progress :-)

Works on Mac laptops in Chrome (tilt your machine) and iOS 4.2 devices.

Works on a Motorola Xoom, but the marble appears to roll uphill, not down.

Works fine on my iPad with iOS 4.3 (Just lock screen rotation).