Baptist expansion where can’t be defrocked, you just move to a small church in your backyard and the only congregation you have is your extended family (the ones who haven’t come out as gay, at least).
I always thought a Bible RPG game where you get more holy powers as you level up would be fun. Fun at least as long as you kept it in line with the text and all the crazy s**t. Like, if you got pelted with shrimp, it would lower your piety/mana or something.