Thanks for reading and feedback! I heard about Nobilis, although never played it myself.

Well, as lapsed Catholic who still likes Catholic aesthetics, organization and some elements of its philosophy, I introduced into my world religion which is basically antitheistic version of the Catholicism. Clerics are doing may things priests and monks were doing in real-life - teaching children (useful things), fighting superstitions (every one, not only competition), officiating ceremonies, curing diseases, keeping libraries and records. But thius religion utterly and absolutely abhors any spirituality - and if there is evidencen of existence of the spiritual world, the worse, because spirit is enemy of true (material) life. Concept is that there is no higher being than human, so worshipping anything not human - gods, angels, demons, nature, fate, whatever - is heresy. There is no god figure, there are “saints” which are not mystics or ascetics, but scientists, explorers, statesmen etc - they are considered role models, but praying to them (or anyone/anything) is superstition aka heresy.