Kult: Heretic Kingdoms is a role-playing game set in a dark fantasy world where the concept of morality is central to the gameplay. Players take on the role of a young female inquisitor tasked with eradicating the remnants of religion in a land where God is dead. The narrative immerses players in a conflict between two secretive factions: a group of mages seeking ultimate power and a cult attempting to revive the Dead God. The choices made throughout the game significantly affect the storyline and lead to one of six distinct endings.

As players navigate this morally ambiguous world, they can choose to embody various archetypes, from a selfless heroine to a ruthless antagonist. The game's design emphasizes player agency, allowing individuals to shape their character's journey based on their decisions and values. With a richly crafted narrative and a focus on the ramifications of one's actions, Kult: Heretic Kingdoms invites players to engage in a profound exploration of morality and consequence.