Cool prototype, I was surprised how well it ran considering how many asteroids were around.  The effects and textures look nice, and the sound design was pretty good too like the asteroid explosion sound was very satisfying.  The ship has very precise and responsive controls.  Trying to track down the smallest asteroids was difficult though when they go flying, sometimes I couldn't catch up or lose them among the other asteroids.  Also the enemy ships were realllllllly fast/small/maneuverable, and were similar colors to the asteroids .  I think I only killed 2 because they flew into my line of fire.  Maybe some form of lock-on based seeking missiles would help there.  Definitely a solid proof of concept though!