Very, very interesting escape game, however short.
The experience was way worth it, the game was challenging enough without being too impossible, and without ever requiring annoying pixel hunts. I like how one had to be pretty clever in order to figure out a few nuances in the game, for instance, what was happening in the day the escape is taking place, and one needs to know how prisms work as well.
Graphics are also pretty good, the only thing that annoyed me was the clock ticking all the time.