This was great! Puzzles were tricky but not too hard, it stopped about when it should have, aesthetic was very nice with the different environments, and I really loved the music! So chill but also fascinating, very fitting.
The only thing that gave me significant trouble was when the holes were introduced; since Bob can't interact with them (i.e. fall in them), and there were no directions or signs anywhere, I assumed they were solid wall for a few minutes.