Fun game, didn't beat it yet, but I don't think it's as difficult as you say. I had to take a break because in the level "In the mix" i accidentally double tapped r while the gravity was reversed, making it impossible to continue.
This game has a nice atmosphere.
Just when I punch the air thinking yes I've done it I find another set of levels!! Brilliant game, great concept, simple and addictive. I'm on "world" 3 now and just seen there's more, a great time waster and will come back tomorrow to do some more levels. It's getting harder and harder now so hope it's achieveable without too much keyboard bashing ;)
Excellent, love the music :)