An unbelievably amazing game. Though the drum kit style of movement and actions may take some time to get used to, it eventually leads to an incredibly rhythmic feel to each challenge as you tackle it, and ultimately scales amazingly difficulty-wise. The only real complaint I have of the game is that there isn't more of it, more specifically more long-scale, challening puzzles like the final one. Were this a game with some kind of extended campaign, or maybe just an endless dungeon of some kind, I would definitely pay a reasonable amount to purchase the game.