Very fun game, the puzzles were both challenging but fun to figure out.  Nice work!

Cool concept but I found what I think is a bug. If you tap two movement keys that go on an angle it puts you outside of the map and you can go anywhere.

Didn't hear any audio, some backround music would be nice. Tough game, very creative. My only thing would be that rolling back onto a tile that is already lit up with the wrong number shouldn't unlight it. Primarily the reason I gave up on the level I did. Or perhaps call it hard mode and have a normal or easy mode be once it lights up it stays lit.