Right now, the demo (really) only runs in landscape mode, where the device is held as a steering wheel, pointing the right side of the device upwards.
In this early tech preview, you can fly a paper plane around (actually stays in the center) inside a room while shooting pins on the wall by the press of a red button. Press the green button to start a new game.
Here you go:
PAPER PLANE SHOOTING PINS!!!! :-)
NOTE: It probably won't look good in *any* desktop browser. - also, the code needs cleanup (don't look just yet ;-))