I really enjoyed the look of this game. I think the keys for shooting isn't really intuitive. If you're flying with WASD the shooting should be on J, K or L, or you could even put it on space. The shooting also feels way too slow and the asteroids were hard to break. It's also pretty irksome when an asteroid hits you from below the screen. I suggest not spawning them underneath a certain y value. Game has a lot of potential! Great job.