Nintendo Life's review examines Disgaea Mayhem, a spin-off that swaps the tactical RPG series' signature turn-based strategy battles for real-time action combat in the style of a Musou (Dynasty Warriors-esque) game. The reviewer calls this genre shift a "gamble" that proves "inoffensive" but ultimately disappointing, arguing it strips away the mechanical depth that defines traditional Disgaea while failing to deliver a compelling substitute.

The game follows mercenary N.A. and Netherworld princess Tichelle as they put down a rebellion, but players control only N.A. throughout, limiting variety to different weapons and special moves rather than a full party. Combat runs at a smooth 60fps in Switch 2 Performance Mode, but is described as repetitive and undemanding, with weak enemies, samey level design and near-identical objectives across the campaign making the experience grow tiresome quickly.