Deadly Diseases & Fertility

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Authors: CaptainSlapster, Delacroix

Last revision: 4 Oct, 2025 at 03:58 UTC (8)

File size: 2.86 MB

On Steam Workshop

Description:

Deadly Diseases & Fertility is a small I wanted to create, because the other disease and fertility mods weren’t fitting my particular needs. What makes this different from other ones? It’s not as punishing as Dark ages, but it feels like life expectancy is a bit more random. This mod also has a few new random harm events that will add some spice to the gameplay.

Changes:
Fertility:
  • Characters that are born or generated have a chance to have 0% fertility
  • Pregnancy complications happen more often than vanilla
  • Mothers are more likely to have complications with their first birth
  • Base fertility is boosted from 50% to 60%

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Diseases:
  • Outbreaks happen less, but are more impactful
  • Outbreaks kill your economy (No work/citizens = no revenue)
  • Typhoid, Malaria, Diphtheria, and Influenza outbreakshave been added to add some variety to the diseases in game!
  • Children will get sickly more often
  • Coughing Fit, Feverish, Pus Boils, and Itchy skin modifiers have been added to reduce life and to spread disease further.
  • Plague Resistance is now calculated in outbreak chances, disease spread in your realm, and character infectivity.

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Buildings:
  • Added Plague Doctor office(Pest house) line of buildings +15,+30, +45 plague resistance(County)
  • Added Market for city holdings each level reduces plague resistance(Province)
  • Added Animal pens to tribal holdings!
  • Majority of buildings now increase/decrease plague resistance(Province)

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Decisions:
  • Added Variolation when a plague is present in your realm. This allows you to take the chance of getting immunization to a specific disease, but comes with a risk of becoming sick!

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Traits:
  • Added a variety of new traits that impact your life!
  • All disease/harmful traits that reduce health are deadlier i.e. Sickly will kill.

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Events:
  • Added mortality events. (Can be disabled via game rules)

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Compatibility:
  • For the best compatibility, especially with the building edits, please have this mod loaded last.
  • This should work along with mods that use Europe as their base (i.e. TFE). Any other mod is "use at your own risk"
  • AGOT: Works fine, If you have an existing save that has sickle cell, a decision in game will remove it.

Localization:
  • Korean by Delcroix

    Changes are noted in the Change Notes! Major changes will be applied to the overall description!
    This did get bigger than what I expected it to. I appreciate the favorites and subscriptions! I hope this brings a little more difficulty without being a pain! Feedback is always appreciated 🙂