This is extremely good! The premise and the goal are easy to grasp instantly. The timer integrates well into the game world. The artwork is great and has an unexpected level of charm. The music really helps to keep the energy going. The only downside for me is that I find it difficult to play games that make heavy use of inertia - that's certainly not a fault with the game. It's one of the game's strengths that it will reward repeat players.
My own problems with inertia aside, there is very little I can recommend for improvements and I can see this working well as part of a bigger game.