Touhou Kaeizuka ～ Phantasmagoria of Flower View.

Forget the standard solo bullet-hell slog; Touhou 9 throws you into a frantic, split-screen arena where you aren't just dodging patterns—you're weaponizing them against an opponent. As an abnormal spring causes flowers to bloom in chaos, you pick from a massive roster of characters to engage in high-speed, head-to-head danmaku warfare. It’s a competitive twist on the series that forces you to balance survival with aggressive spell-card barrages. If you want to see how well your reflexes hold up when someone is actively trying to bury you in bullets, this is the definitive showdown.