That was a lot of fun to play! :-D
Add music, polish it following the classic "juice it or lose it" youtube video and you'll get a game that people will be more than happy to pay for.
I really like how smooth you got the camera.
The only point of improvement for the game play would be to add arrows (or other forms of clue) that point to where to go when you can't see where the exit is and the turn is not obvious.
You'll get my vote as soon as they'll open submission :-)