For me? It's the gendarmes.

>>95909302
There's plenty:
Wolves of God
Harnworld
ACKS (and ACKS 2)
AD&D
Lion and Dragon
The One Ring has real Valar and "Good and Evil" are real concepts
You could play a part of the Vatican in World of Darkness/Hunter
Sword and Caravan

I could go on.... Deus Vult!