First of all there seem to be a bug when toggling the fullscreen button.
The screen becomes gray, clicking on the gray seems to solve the problem.
Minor problem, but good to know.
The idea is interesting but I found it quite hard to find the books even with the highlight.
There doesn't seem to be a way to drop a book once you picked it up. That was kinda frustrating,
The atmosphere is nice and fits the theme, but the book page sound was a bit too much for me, it is playing over and over again even if I do not move.
I think with a bit more work and features it could become a really nice game.
Good job and good luck!