Gameplay was pretty straightforward to figure out and is enjoyable when you find a rythm. Aside from the wendigo-meter (for lack of a better term) the puzzle feels a little detached from what is happening in the 3D room.
A bit weird that you cannot detach a piece that was put on incorrectly... unless you can, and I just missed how you do that lol :P
It looks like a lot of work went into the 3D scene. The opening cinematic is a nice touch. I seemed to be able to run it in browser okay without hardware acceleration, it was just a bit choppy when I first loaded it in. Good job on your first published game with 3D graphics!