Tiptoeing the other-wordly aspect of horror, this short game shines in its pacing, starting slow before picking up fast enough to hold your breath until the end. The writing does a good job at hinting during the first half of the game of something not being quite right, while still keeping the stake low, keeping it subtle enough to leave you confused until the reveal - though it can be easy to guess the kind of twist the story has.
I could have seen the ending going a different route than is currently there, where you don't make it out, pushing the horror aspect even further.