✓ Fits the arena shooters cluster, with shooter, first-person shooting and adventure storytelling
≠ Where it differs: brings precision platforming, Metroidvania exploration and ranged combat, while skipping dark, oppressive atmosphere
Cave Story is a game in the Metroidvania platform-adventure genre, first released on PC in 2004. The game is set in deep dark caves on a floating island. The island is inhabited by a race of intelligent rabbit-like creatures called Mimigas.
Where it drifts furthest from 12 is Better than 6: setting and visuals.