This was a fun little idea, though probably not a good idea to play while sleepy. (My brain kept trying to over engineer some of the puzzles since I only recently woke up.) Only thing I'd have to say about it is the music, while fitting, was maybe a little repetitive for me? It both did and didn't help me focus... I don't know. I'd get some more opinions about that from other people cause it might just be me with this one. Still though, this is a really solid idea you got here and I could see quite a few more puzzles coming out of what's already in the game. And for this to be your first game, it's rather impressive. Great work!