Wonderfull little game, fun idea. I do have to ask, with the way the room reacts, which part is actually spinning? The chair, or the room?
The room, and the camera.
The chair 'appears' spinning because it is actually fixed, whereas the camera spins/shakes to give it the illusion it is spinning. Then the room is actually spinning to have some rigidbody action on top of spinning camera for some added chaos!