Innovative concept. :) Here are my comments:
> I like the idea. It puts a twist to the horror genre and it also touches on a scenario that people commonly experience in life (i.e., moving in the room in the dark)
> The art is so well-done. Good job on that! Not only the story at the beginning but also in game.
Possible points of improvement:
> Maybe adding sounds can help the experience. Not only for the scary effect but also to give player the feedback when he bumps into something.
> The ghost sometimes can be a problem because he lurks around the exit, making it very difficult to walk past it (maybe I missed a mechanic that I'm supposed to do to avoid this?)
Overall, good game! With some tweaks this can be something really exciting!
P.S. I invite you to check out and give feedback to our game! We need more ratings. https://itch.io/jam/gmtk-2018/rate/300343