The random ghost appearance is a nice idea. But it wasn’t that scary. When I first saw the ghost, I tried to see its full body then died. I almost thought the suspects became ghosts. But after finding the first suspect I lost interest. The reason was the map did not have the name of the locations so even if i find it it is still hard to mark which is which. Also, it looks pixelated on full screen and the text looks bad. I suggest you to try different fullscreen options in Godot to find the one where text looks good. I have always hated unreadable text or blury text in video games because finding new info is not enjoyable if the text is blury or pixelated to read.
Anyways, nice idea though. But accessibility could have been better.
By the way, did you implement the theme somewhere? I could not find it.