I like that there are two hidden passages in this game which allow one to explore beyond the visible scenes. Although I couldn't relate the four sentences in a book to anything, I was able to find most items by random clicking on spots.
The billiard puzzle was difficult. I did pay attention to the trace marks left on each painting. However, I couldn't work out correctly the direction each ball would travel. I thought the second ball would do a corner turn, but I was wrong after reading the walk through.