DoDonPachi Dai-Ou-Jou is the vertical shoot 'em up Cave released in 2002, the third installment in the DonPachi series and one of the most representative titles of the danmaku or bullet hell subgenre, with extremely dense firing patterns that demand pattern memorization and pixel-precise reading of the screen.
It's a mandatory reference for anyone wanting to understand why 2000s Japanese shmups became synonymous with extreme difficulty, and it's still studied and competed over in the genre's specialized scene.

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