This is my favourite game ever by far. Words cannot explain how much I love this game, I literally had a full-body cathartic experience while playing it (if you played it you know why). I have to admit tho that once the game is beaten it's not much fun at all to go back to it, as the most enjoyable and satisfying aspect of the game is to decode the logic behind the puzzles and understand everything as you move along, but it still allows for a pretty long gameplay of up to 30+ hours.