It's a great game! But I feel like I'm not doing much, I don't feel like I'm in power of the game... meaning the turning and the acceleration. However the polish is great, and the simplistic graphics is awesome and fits the game. The stars and planets in the background is definitely a nice touch. I think something you could work on, is if you fix the other problem I mentioned.. I will understand the physics earlier, and feel smart about it, so you just need more control. And then everything else with the upgrading and the obvious task to do is perfect.