The design aspect of the game is quite good, although the story was non existent along with the atmosphere.
As far as the story, you could go with the basic setup, hook, scare, release then jumpscare technique, people don't mind reading to get that feeling from what I've seen there just has to be good tension.
I felt the atmosphere was lacking majorly due to sound design, the books crashing off of the shelf was not bad but, more of those types of visuals would be wonderful even if it's at the expense of the game being slightly longer.