Good twist on an old concept.
I can't give you 10 because it's not an original concept, but other than that this was a wonderful game.
Graphics: A good pallette of colors, nothing annoyingly bright or obnoxious, but very distinct.
Animation: Smooth, I especially liked the shattering of the line upon impact with enemies.
Level Progression: A good learning curve. And I thought the numerous enemy types made the game WORTH PLAYING past the first 3 levels.
All and all a great game.
Excuse me while I go play again.