Battles take place on a grid, around which participants can move freely. The New Kid and up to three allies fight their enemies using attacks including melee, ranged, and powerful farts. The player can choose from up to ten superhero archetypes ranging from high-speed Speedsters, close-combat Brutalists, powerful Psychics, and healing Plantmancers each offering unique abilities. The New Kid is able to freely explore South Park, interacting with characters, undertaking quests, and accessing new areas by progressing through the main story. The game is played from a 2.5D third-person perspective, replicating the aesthetic of the television series. The superheroes' game unintentionally uncovers a conspiracy to raise crime in the town, bringing them into conflict with supervillains, genetically engineered monsters, the police, crime families, and the new kingpin of crime.

The game's narrative occurs one day after the events of its predecessor it follows the New Kid, who has recently moved to South Park and becomes involved in an epic roleplay involving two rival superhero factions vying to create their own superhero media franchises. Based on the American animated sitcom South Park, it is the sequel to the 2014 video game South Park: The Stick of Truth. South Park: The Fractured but Whole is a 2017 role-playing video game developed by Ubisoft San Francisco and published by Ubisoft in collaboration with South Park Digital Studios.

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