I really like the idea, I think it has the potential for lots of puzzles! I was pretty confused as to how to play at the start, especially with the box. I don't know if I'm messing something up, but it feels like the lock doesn't break with boxes, except sometimes it does. Also, once I pass a room, but don't bring something with me, I have to reset the entire level, which can get a bit frustrating. I'm a fan of the music, it's very fun and fitting.