I liked Marvin Spectrum more. The colours were nice and the character didn't look like it was jogging on the spot, dodging things that were coming at him :/
I don't really like puzzles, but I must admit, pretty art, clever puzzles and innovative gameplay make it one of the more interesting games I've played. My only problem with is that it could be longer.
The game is simple, a bit too much so. Maybe you could include levels that need a certain distance travelled to reach? Or maybe you could place a limit on how many times we can bump into the wall/eat a gray orb?