This game idea is quite difficult to understand/control at first, but it get's way more fun once you've gotten the hang of it. The idea is really cool, and I found it really enjoyable to play for a while (I wasn't able to get a score higher than ~100, lol, I need to get better at playing these games) and the music and art are both super cute and fitting for the game! My only small nitpick is that it's a little bit hard to see what color each of the bullets are, and remembering what buttons I have to use to use to control them. Maybe you could brighten up the color of the bullets a bit more? But then if visibility on the bright background is bad, try adding an outline to the textures? I don't really know what would work, you can figure it out if you want to finish this game. (Oh the particle effects are also really cool, keep it up!)