That was simply amazing. I really enjoyed it. It took me a while to get used to the multiple systems, but near the middle it clicked with me. In fact, on my second play through I practically flew through the game as I was used to the mechanics( that and I probably knew how to solve each level). I particularly enjoyed quickly switching light bulbs while jumping; managed to cheese a level with it. Music is great, the death sound effect was kind of out of place but it grew on me too.