So many colors... lights... numbers...whoah. Definitely a sensory overload, though that's not necessarily a bad thing. It's cool that you made an effort to keep the enemy bullets visible, but it was still a strain to see them. Once the cards got more complex and started to effect each other, I found the card building pretty interesting, though it's hard to imagine a way to go too wrong, considering the sheer amount of bullets and fire rate. I personally would prefer the game to slow down just a bit so that I can actually perceive the results my decisions are having, but there is an appeal to just frantically throwing everything at the enemy. Great work!