Interesting concept. I especially like that I don't have to do any work, I can just very carefully set it up and watch it play out in front of me. The way everything harmoniously feeds the other factors of the game and grows exponential, then eventually dies out is reaaaally cool. In addition, the flixel/retro theme is really nice and you did it well. The soundtrack was fucking amazing, it didn't get old as it often does. I hope they payed you a lot of money for this one, it's the first bullet hell game where you cause the bullet hell!
Also, why do they keep flying in this area? Don't they realize that they'll be killed? Ships are exploding! Stop flying here! Why do they keep loading the ships with unexploded bullets? WHY?