Very cool atmosphere and I like the echolocation (but it is a little hard to click off, you have to look at the ground). I was unable to pick up books though. Really like the particle effect and would love to know how you pulled that off.
Thank you :), there is a small key like cube on the ground beside the chair your head wobbles so you gotta {mouse click} then press {e} quickly to pick it up, Then go to the door and get close and press E
