Not bad at all ! Would definitley fit well as an app and good time waster. I played up to around level 9. It kept me interested, and was wondering what you would come up with next.
Only thing I'd suggest would be instead of "I wonder what this does" have a level that eases the player into it, rather then the ball falling off cause I was unaware that the triangle offered some sort of gravity. At first you would explain the new things at the top of the screen, then it became a "figure it out" situation. It was fun though!