As a strategy RPG simulation expansion released in late 2025, Crusader Kings III: All Under Heaven deepens the core grand strategy experience by focusing on Asian history. Players engage in role-playing and political simulation, centered on mechanics for claiming and maintaining the Mandate to shape vast empires. This content adds region-specific political structures and new role-playing avenues within the existing framework, appealing to those who enjoy complex dynastic management and large-scale historical sandbox gameplay.