I think Local Minimum has summed it up nicely.
I was able to play to the end of the game, but only after reading your comment here that the correct way to go in the first level is to the right. I highly doubt I would have found it without knowing that. The other levels were okay, but I was expecting more exploration of the optical illusion kind of thing. It may just be me, but I find it hard to judge distance when an object is toon-shaded, so the platforming was frustrating.
I have a bit of a weak spot for songs that build as you interact with the level, and that was pretty well done. I also liked the animated static textures in the last level.