Not bad, I really enjoyed the gravity physics type of game this was, the levels were not at all that bad. With this, you should create a space theme game, one where you have to avoid black holes or something in that manner. Great game.
Simple, but still fun! It could use some extra touches, like sound effects and more visual effects to make it more attractive, but as is, it's still solid.
Did a quick update and added some sounds I was toying with, as well as made the UI more intuitive. I'm working on visual changes and what i have has been added. Thanks for the constructive feedback