Plague for Foundation

Released (updated ago). Ranked 114 of 283 with 3,929 (5 today) downloads

Published by Batyushki (mod ID: 639657)


This mod adds a new challenge to the game: containing outbreaks of plague. Unwell villagers become temporarily unemployed and can seriously impact production in your village if disease is left untreated.

How it works

  • Once you have reached 60 population, the plague may appear in between zero and 1% of the population each month.
  • As soon as a villager is unwell, they will temporarily change jobs and show a job of "Unwell".
  • Unwell villagers will attempt to go to a Hospital if there is a free bed. If there is no free bed, they will go home.
  • Unwell villagers have a 20% chance of infecting others who are within 2 metres, at the end of each day after their first day of illness.
  • Unwell villagers still try to meet their needs, and will go to the market, well and church.
  • The plague will not kill your villagers, but a widespread pandemic will seriously injure production and lead to unhappiness and emigration.
  • Illnesses last between 10 and 20 days. After recovering, the villager will return to their previous job.
  • After recovery, villagers are immune from illness for a period between 20 and 200 days.
  • Soldiers and the Bailiff do not fall ill. Monks complain of being ill but carry on with their jobs as a form of self-punishment.


  • Hospitals are not required, but they have a significant impact on reducing disease.
  • Unwell villagers will automatically try to go to the hospital. By doing so they reduce the chance of spreading the infection to other villagers.
  • Each hospital employs 4 physicians. Separate wards for patients have 10 beds each.
  • Wards must have their own door separate from the main hospital, to decrease the risk of infection spreading.
  • Being seen by a physician reduces recovery time by up to half. The higher the ratio of physicians to patients, the faster villagers in the hospital will recover. Four physicians and 20 patients will be a 20% reduction in time to recover. Fewer patients per physician means faster recovery time, up to a maximum 50% reduction.


  • This is an optional job that helps improve the overall health of your settlement.
  • The Apothecary is a Monk in the Monastery who makes Remedies from Herbs.
  • Remedies help decrease the chance that villagers will come down with a serious illness.
    • One apothecary will reduce the chance of new disease from 100% to 90%
    • Two apothecaries reduce the chance to 80%
    • And so on, up to five apothecaries (50% chance)
    • More than five Apothecaries will have no impact on the incidence of new illnesses
  • Apothecaries will only reduce illness if they have access to Herbs


  • Newcomers don't have a home, so when they are unwell they will go to the village centre. If you have a lot of Newcomers, they can quickly spread disease to others and create a pandemic. Try to promote Newcomers as soon as possible to avoid crowds, if you don't have enough hospitals.
  • Keep an eye on the hospital and expand if you see all the beds are full, or you see a lot of Unwell villagers in the villager list.
  • If you fill a job with someone else while the original worker is unwell, when the first worker recovers they will have their old job but will look for a new place to work. You should review the list of villagers periodically to look for people who have a job assigned but no workplace.
  • If you manually change the job of an unwell villager, they will still be ill and will reset to Unwell again at the end of the day. Avoid doing this as it will delay their recovery.












Join the community or sign in with your gaming account to join the conversation:

Panda26xmKVN1S9wwXD @panda26xmkvn1s9wwxd

Where can I find the hospital?

Batyushki @batyushki

Panda26xmKVN1S9wwXD It's in the main building menu.

Tomalini @tomalini

Hello, I am finding that when the plague hits my village badly it can put about 1/7 of my villagers into hospital all at once very quickly. When I check the hospitals about 1/3 of the patients still have their original jobs but with "can't find a place to work" instead of actually being Unwell. When I click on "view workplace" for them it centres on the hospital though.
During this time I haven't had further immigration or filled their original jobs. Making these villagers manually unemployed makes them finally leave the hospitals and they don't then become Unwell, they just stay unemployed until re-assigned a job. I have the 5 apothecaries, plenty of Herbs and 12 physicians across my 3 hospitals and I have 120 hospital beds for a population of about 800.

Is this an error or am I just not using the hospitals efficiently?

Thanks and I appreciate the excellent work! :)

Batyushki @batyushki

Tomalini could you contact me on discord, I would like to look at your saved game. I haven't seen that so it may be another mod is interfering.

Tomalini @tomalini

I don't think this was an error, looks like it might have just been the way my village was set out. In the end I changed the script from 20% down to 10% chance of infecting villagers within 2 metres and that seemed to resolve it. If I ever start another save with a more efficient village I'll set it back to 20% and let you know if the issue returns.
Appreciate the support with my queries batyushki, have made a donation towards your work, keep it up!

Batyushki @batyushki

Thanks very much for the update, and thank you for the donation!!

Batyushki @batyushki

Found a bug today, when Transporters fall ill and go to hospital, after recovering they will get a job in any random warehouse. If you had 1 transporter per warehouse before, they might all go to work in the same warehouse, leaving other warehouses without workers. Same for granaries. I will try to fix this by recording the exact workplace before they go to hospital and trying to re-employ them first in their original workplace.

Batyushki @batyushki

This is now fixed. Workers will attempt to return to their previous workplace only, unless their job has already been filled. In that case they will get their old job back but the game will decide where they will work.

mat49a2 @marek-tarnacki

The plague has also reached my army. All soldiers were downgraded to level 1, and the same with two knights. In the hospital, they took weapons away from the sick soldiers and I had to assign them. And one soldier got so fed up with the hospital that he came back without his uniform. Additionally, some soldiers went to ordinary houses instead of barracks. Which caused a small housing crisis in the village. A terrible plague.

Translated with (free version)

Batyushki @batyushki

Thanks for testing it with your soldiers! That is a bug, the mod is supposed to skip Soldiers due to those issues. I will work on a fix.

Batyushki @batyushki

mat49a2 soldiers should no longer fall ill in release 1.0.3.

mat49a2 @marek-tarnacki

The military is already ok. But there is a problem with convalescent homes - messages pop up that there is no home within a suitable distance to the workplace, that the homes do not have the right status. In a word - a wandering of people in search of a home after an illness. Please check it out. I miss pharmacies. Pharmacies, where medicine produced by monks will be sold (you would have to add "medicine" product to warehouses) because now there are only losses :) Monks process herbs into medicines and there is no money. Free medical treatment? :)

Translated with (free version)

Batyushki @batyushki

If you build some Apothecaries and Herb garden at the Monastery, it will significantly reduce how many people get ill. You don't need to sell the remedies, the Apothecaries will take care of it for free. This is a modding limitation right now that hopefully in future I will be able to work around.

I will do some more testing on the impact to housing when villagers come out of the hospital. Thanks for your feedback!