Very nice game, I love the art and the music, however the actual gameplay feels more like a tech demo or a toy than an actual game. I definitely see promise with it though. A little UI work and scaled difficulty, or some varying enemies who fight back or do something other than float in space. It would have been nice to see a boost recharge gauge, even if it was a quick 2 second job like i did in my game. so i know when i can boost again and when i cant. Also, the boost felt underused/non-dominant strategy, i didnt feel any incentive to actually boost or like i gained anything except punishment if i boosted when i was in an asteroid field.
All in all though, great work, and id love to see if continued and built onto.