Religion
From Old World Official Wiki
Each city and character will follow their own Religion. When enough characters in a Family convert to the Nation's religion the Nation will receive additional benefits. Cities that follow a Religion will gain a yield bonus of 2 Culture and will also gain or lose Happiness depending on the opinion of that religion of the Nation. There are two types of religions in Old World: Pagan Religions and World Religions.
- Pagan Religions are unique to each Nation and founded once the Nation completes its first Shrine improvement. Pagan Religions cannot spread, do not have Disciples and Theologies and can only be adopted as State Religion with the Divine Rule law.
- World Religions can be founded once certain requirements are met. Pagan Religions can spread, have Disciples and Theologies and can always be adopted as State Religions.