Asteriods-1980

A game that's available for Mac and Linux. Here are some of the characteristics of the game-

1. Circular asteroids(sorry ) :(  .
2. Real-life physics for movement(arrow keys, I hate WASD).
3. Realistic acceleration.
4. You can't get out(sorry too).
5. 3 Lives.
6. Score added by ten every time you shoot an asteroid.
7. When you destroy every asteroid you move to the next level.

I take criticism well, so you can tell me the defects or the bugs.