Great game! The graphics are simple, but fitting, the concept is really nice, and the little narrator is a very nice touch ^^. My only complain is that the character is a little bit too fast, making some precise rooms a bit unecessary hard ^^' (and outspeeding the keys is frustrating). Other than that, I really enjoyed the idea of they keys following you, and all the mechanics you built around that idea. That's a very original puzzle-platformer, and I really enjoyed it. Great job!