This is pretty good. The slowness is annoying. And even if it's just my computer, the fact that you have to wait for him to flip around all the way back to the last checkpoint is aggravating, and the fact you have to do it every time you start over a boss is even worse. I do want to say, though, original concept, done pretty well. I liked the sky backdrops more than the water ones, just because they made more sense with the idea that he's a binary boy. If you gave this a little story where he's stuck to the string and can't be detached from it or he'll die, that would be cool, because when I'm playing and he detaches from the rope, he dies. Pretty good job.