A mediocre game tainted by problems
The premise of the game is alright, but overall it's quite lacking. The "riddles" are mostly just questions, "A riddle is a statement or question or phrase having a double or veiled meaning, put forth as a puzzle to be solved" and you failed completely at this. The low quality images make it very hard to discern details in the paintings which is a bit of a silly problem for a game about art to have. Also the preloader sucked, you have noone to blame but yourself for all the reviews saying that the game didn't load. With such a large filesize it's no good if the preloader only appears half way through the process, it was a mistake to release the game before that issue was resolved.
Basically, premise=good, execution=sloppy