I know if I was good at tower defense games id be good at this game 

This game has very well-implemented physics, perfectly suited to the game's controls. It's all very fun. And the music accelerating as the ground approaches gives it a really cool sense of urgency.

That was a very enjoyable game, bonus points for impressing and engaging someone who is not much into puzzles!

Fun game. Collecting the upgrades is easy, reaching the top not so much. :-)