A little suggestion to go with the Anti-climatic ending Red is talking about.
If you end the game going at a certain speed say 150rpm you accidently reverse the rotation of the earth. And if you are extremely high at the end you end up going into space.
I would also like to see some badges. I simply like collecting them. I rarely play any games that do not have badges.
Good game though 4/5 that is better than a lot of games I have played.