Crusader Kings 3 is a grand strategy game that lets players take control of a medieval dynasty and guide it through various political and military challenges. Religion plays a vital role in the game, with characters' beliefs and moral values shaping their decision-making and influencing their relationships with other characters. One of the most significant features of religion in Crusader Kings 3 is the Tenet system, which allows players to customize their characters' beliefs based on their faith, culture, and personal convictions.