Daioh is a vertical shoot 'em up developed by Athena in 1993, with a protagonist ship of enormous size compared to the rest of the genre and a level design that prioritizes the sheer number of enemies on screen over bullet-pattern subtlety, following the classic school of Japanese shmups prior to the bullet-hell era.
It's a minor cult title within the early-90s shooter catalog, remembered mostly by genre collectors.
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