A very different setting compared to the horror games I've played so far in the jam, though that's gone for quite a few of them. There's been a pretty big variety in terms of settings, mechanics and approaches to jumpscare, atmosphere etc. It's definitely been an terrifying jam in some respects to play games from,
Otherwise though this was an interesting experience, I did sorta miss all the jumpscares, except for the audio which definitely got me quite badly a lot. The notes also led to a very unexpected ending.
As for the actual monsters though I do have to say, they were a bit weird. They definitely had a presence, but I honestly did not realize they were monsters for a sec. Maybe some sort of different audio when they've "spotted" you, that could help I'm not sure.
Another thing is I do feel like a lot of the visual cues were weird, mainly the fact that the keys are surrounding by a sort of, radioactive green. Then the enemies are a blue-ish green. Which, honestly if I had not seen a key I would've assumed it was something dangerous. But I sorta saw the key in a rush away from the ghosts which meant I was forced to figure that out.
Also the fact that there was a note explaining the goal was interesting in world storytelling, a bit blatant, but it worked. Unfortunately though it was one of those out the way note,s so I feel like some people may miss it when playing the game. Maybe putting it next to a key or something could help. At least just for that one.
One final thing I would say is that the indication of when you're listing sanity to things is a bit weird at times, mainly because it doesn't seem to be vision based at all, which means that you can suddenly start losing sanity without much feedback on what exactly is wrong. It is helpful that there is feedback when it's being lost. It just doesn't quite help you realize what you need to actually do to fix it.
Overall though a decently put together game with a few relatively well fleshed out mechanics that led to a relatively scary experience at times.