I’m on my fifth playthrough of the game, 597 hours in total. The first four playthroughs were as various Pagan and Muslim faiths. I never once saw anything about a heresy appear in game.

This time around I decided to start as a Catholic and establish a new Christian faith. I’ve already been given two separate prompts asking me if I want to convert to the Cathar heresy, and then later my new Christian faith was declared a heresy and about six random rulers throughout Europe decided to convert to my faith without any input from me.

Seems like heresies are a big deal when you start as a European Catholic but I had no idea they even existed before this. I tried reading up on it and it seems like heresies occur when Fervor is too low.

Does anyone know if heresies can occur in other religions? I usually don’t pay close attention to Fervor, so I’m not sure if it’s a Christian-exclusive mechanic, or if Catholicism just happens to be one of the only faiths with such a swingy Fervor score.

  • @caut_R
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    18 months ago

    Disclaimer: I‘m no expert, if anyone‘s a pro on this, please listen to them.

    AFAIK and IIRC, heresies can appear in any religion when the fervor drops low enough, at roundabout 50%. I vaguely remember getting heresies on my „Mother Of Us All“-playthrough in Africa (African faith) and Lingua Franca playthrough (Muslim faith), but it‘s been a while.

    Fervor is pretty funky in the game cause winning holy wars, for instance, LOSES you fervor for some reason, so I guess the pope likes to nuke Christianity’s fervor which leads to lotsa heresies. There‘s a mod that „fixes“ that. Unless they changed how it works, I haven‘t kept up with patches.

    Hope any of this helps. Again, I‘m no expert, just wanted to give you something to go by.

    • @cjoll4OP
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      18 months ago

      That makes sense. I’m curious to see what kind of heresies would appear for various Pagan or Eastern faiths.

      From what I read, the Fervor threshold for heresies is 40%. I also saw a mod online that causes Fervor to gravitate toward a lower value, so that most faiths’ Fervor doesn’t stick at 90%-100% anymore. I’ll have to look into it some more. Thanks!