I have a Christian Playthrough in Leaf Green I’m doing.
>I must keep the sabbath holy and not play on Sunday
>No Pokémon can leave your party until they’re level 18
>Same sex Pokémon cannot be in the day at together
>Pokémon cannot be put in the daycare until level 18
>Evolution is a lie, you cannot evolve Pokémon.(Note; god created things as intended, so if you encounter a wild Nidorino, for example, that’s fine, but it won’t evolve into Nidoking and can’t be obtained by leveling up Nidoran)
>No dark or ghost type Pokémon as dark powers are against the lord
>Legendary Pokémon are false idols and must be destroyed
>No snake Pokémon as they are cursed by god
>Fossils cannot be turned into Pokémon, as only god may create life and fossils are lies planted by the devil to trick people into believing evolutionism
Those are the rules I can think of off of the top of my head. Really the only stipulation is you can’t catch Pokémon under level 18 if they would be sent to the PC but that becomes negligible as a penalty past a certain point. There might be one about reviving fainted Pokemon since only Christ can come back from the dead or some shit