As a puzzle game enjoyer, this was a really neat experience! I'm kicking myself for not being able to finish it just yet (the key and the music box have me a bit confuddled), but it's definitely got me turning my gears. Definitely very serious and very enjoyable. That said, I don't know if a loop of rooms constitutes a spin mechanic? And while I understand why you wanted to create a dark, creepy environment, I found myself wishing I could tweak the settings so I could see a bit better (while still being sufficiently spooked). But this game definitely has me wanting to explore further, and the moment I have an idea of what I could use those two items for, I'll be back with a quickness!