
This game is rated ESRB: Mature 17+ for Violence.
Ninety-Nine Nights is a fantasy hack-and-slash game developed by Phantagram in collaboration with Q Entertainment, with Tetsuya Mizuguchi serving as producer, and released for Xbox 360 in 2006. The game casts players in large-scale battlefield combat, emphasizing the kind of overwhelming enemy numbers and relentless melee action characteristic of the genre. Set in a dark fantasy world, it places characters at the center of massive military conflicts, where cutting through enormous waves of opponents is the central focus. The title's name reflects this design philosophy, evoking prolonged, attrition-heavy combat across extended campaigns. As a beat 'em up rooted in fantasy adventure, it draws on the tradition of spectacle-driven action games while situating that action within a medieval-inspired setting driven by faction warfare.