Fun but flawed.
Very fun game and I enjoyed playing it, but there are definitely some flaws that could easily be fixed.
1.) Keep the ball on the screen at all times. It's more fun to actually use your skill instead of guessing where you are.
2.) On some levels after going through the finish (black hole thingy), you start from the spot where the finish was on the last level in the level after it. So sometimes I would be starting on a plaform right next to the finish instead of at the bottom where I was supposed to be starting.
3.) The invisble platforms, now these were just pointless. Maybe make them harder to see instead of invisible because a couple times I would just land in mid-air, sitting on nothing.
Other than that I found this game to be fun and quite addictive.