Wow! i think this is the best usage of the theme i've seen thus far, you're very talented.
The idea and execution are just perfect, the subtle tutorial fits in perfectly and everything just works, i loved playing this game and i think you have good bases here to take it much farther.
If you do decide to continue with it i think it would be best to give in some options for better visibility and you can probably only do that if you dont take the 1-bit route :)
Please rate my game too :)