I got stuck on level 4, that's sad because I was really liking it. Anyway, the idea is wonderful, original and creative. Opens room for a lot of different puzzles! Music is not big thing but I enjoyed. Nice job on the game, I had a lot of fun. Maybe a little bit more of indication and guidance, I tried "everything" with that box but nothing worked.
Nice job guys, and oh, did you tried my game?What about giving a look?