A fun-as-hell puzzler with terrific Game Boy graphics, a great concept, highly responsive controls, and some of the most bitchin' music on the entire system which - sadly - shares the same issue as the rest of the cool GB puzzle games like it: too short and not a lot of replay incentive outside of beating your own decorative high score. If this had, like 100 rooms that you could play in any order you like? It would be legendary. Still rocks as it is though.