Insane bullet hell games, my absolute favorite! The patterns are all very very well done, they're a treat to look at in all their chaotic glory, and are very fun to play through. I wish there was some sort of panel in the UI that allowed me to see which colors were correlated to which button presses, because it's very hard for my brain to immediately connect the colors to their respective buttons in the heat of all the bullet helling.
I think a little visual reminder in the midst of all the chaos would be really really helpful!