Update 8: Tainted Earth Patch Notes

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Second Lieutenant
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Hello, Survivors!

It’s time to put on your hazmat suits and dust off those Geiger counters - things are going to get glowy! Update 8: Tainted Earth is one of our biggest updates to date, and it adds 5 new buildings, new Pollution and Water management systems, and much more!

With this update, your game version should be on PC and on Xbox. As always, if you have any feedback do let us know! Also, please note that there will not be an update in July, due to some much-needed vacations teamwide. :)

  • Pollution simulation:
    • Wind will throw pollution out of the pollution deposits and spread it around the colony map. Some disasters such as Fallout will also spread pollution.
    • Buildings close to the pollutants will absorb pollution and need to be decontaminated.
      • 100% of pollution will stop the building.
      • Polluted shelters are still habitable, but they deliver a high dosage of pollution to colonists living in them.
    • Colonists can gather pollution and get the radiation sickness condition from it.
    • Leaving dead colonists laying in the colony will start generating pollution.
    • Some buildings such as Burial Pit, Outhouse, and Environmental Station generate pollution and should not be placed close to the living space of colonists.
    • Repairing a polluted building will generate pollution to the colonists repairing it. Higher levels of clothing can prevent this contamination.
  • Added a heatmap type overlay mode for viewing where pollution is at its strongest. This can be opened from the bottom menu or pressing ‘P’ on the keyboard. Similar overlay modes will be used for other features in future patches.
  • Support added for multiple levels of Clothing, Tools, and Weapons.
    • The manufacturing of these can be selected from each building.
    • Colonists prefer higher-level items over lower-level items.
    • Better weapons have a higher level of damage output, better tools improve work efficiency and better clothes protect from higher levels of pollution.
  • Water system changes:
    • Water is divided into drinking water and water used by buildings.
      • Production is still global. The division happens in the distribution phase.
    • Some buildings now consume water. The water is provided to them by a close-by water storage building.
      • Greenhouse
      • Field Hospital
      • Cookhouse
      • Mess hall
      • Bakery
      • Sauna
    • Water consumption of buildings is changed to use an effective area-based system.
      • Water towers distribute water to their surrounding buildings within their effective area.
      • The priority inside the area is determined by the distance from the water tower.
    • Clean water storages are used to store clean water that is only meant for colonists.
      • If drinking water storages are not available, colonists drink directly from the production.
      • Previous water storage buildings now function as clean water storage.
    • New buildings are added for water production and distribution.
  • New buildings:
    • Aqua Farm - Turns lakes into farms and allows the production of water-based food in many forms. The downside is that it slowly pollutes the lake.
    • Water Collector - Early game water producer. A colonist working in the building carries water from the lakes. This replaces well as the early game water production building.
    • Water Pump - Late game building that pumps water in large quantities from lakes. It must be placed near the water, similar to fisheries and Aqua Farms.
    • Clean Water Storage - Delivers and stores water for colonists.
    • Large Clean Water Storage - The same as above but stores more clean water.
    • Magnetic Separator - Late game building that allows mining rare resources from underground deposits to be used in the production of components.
    • Electronics Factory - Late game building that makes it possible to produce components inside the colony.
  • Assignable work areas now have 3D models present in the world, which stays visible even after deselecting the related building. The area can also be moved by clicking the new 3D model at any time, rather than going through the building like before.
  • Information is now shown in the UI about all resource types and amounts that fall under the current active work area while modifying it.
  • Pathfinding now has a fallback functionality if the colonist ends in a dead-end or blocked section of the map. This should prevent colonists from walking over water or other blocked tiles in these situations.
  • Added option to set global production limits per resource type. This allows prioritizing the production of certain resources over others. This feature is accessible from production buildings.
  • Saving the game is now blocked when event popup is active and unfinished.
  • Saving building components is now more robust and allows adding and removing components from buildings in future updates. This allows more flexibility with future updates that change building features.
  • A new kind of tutorial popup is now shown when the gate is built for the first time. Similar functionality will be added to other critical parts of the game progression in the future.
  • Removed a previously added feature, which hid the health bars after a certain amount of time. Health bars are now shown only when the person is in combat state.
  • Rare resource type added, which can be used to manufacture Components. Its current storage amount can also be seen in the top bar.
  • New underground deposits added into the map - Rare deposit.
  • Fixed issue related to updating the gate in the middle of gate combat.
  • Children who are not in school now carry boxes and scavenge deposits in the colony.
  • Underground deposits now have a richness value that affects the resource production speed from the deposit.
  • Field efficiency is now calculated from the soil types it’s placed on per tile, placing on barren soil is no longer blocked.
  • Colonists can now eat multiple food types at once from storage and different food types decrease hunger by different amounts.
  • Cancelling repair task now drops the resources carried in for the repair next to the repaired building.
  • Repair resources now return to the correct state after loading a save game.
  • Bandits now throw molotovs during colony attacks and sometimes steal resources from storage buildings.
  • Combat can now sometimes cause a critical hit, which causes a colonist to get an injured condition.
  • Specialists are no longer deselected on the world map when issuing a command and all action points have been used.
  • Pressing ‘L’ key allows highlighting all living entities in the colony map including animals, colonists, and bandits.
  • The Malnutrition tutorial is now actually shown.
  • Sauna is now prioritized over outhouse if both are available.
  • Colonists no longer run through large plank deposits.
  • Building a gate now shows a milestone popup.
  • Support for 3D icon floaters has been added and the old 2D floater icons have been replaced with newer ones. The new system also supports animations and state changes for the icons. Work with this will continue in future updates and all old 2D icons will be replaced with 3D icons.
  • Work area indicators are now shown on the map as 3D objects.
  • Pollution affects the look of foliage nearby and the color of night fog.
  • Added UI indicator which points to important objects that are currently out of the view.
  • Children carry tools and boxes in a more correct position now.
  • Events related to Societies now show their leader as the event image.
  • Pollution deposit models have been remade to match the new pollution system.
  • Decoration objects now rotate to random orientation when placed.
  • Statistics menu and stored food icons changed, notification icons simplified.
  • Selection ring size is no longer related to the size of the selected object, such as children having a smaller ring than adults.
  • Second Chances event no longer triggers earlier than it should.
  • The All-terrain Tires tech now improves all vehicles.
  • 3Like
  • 2Love


Jun 4, 2020
I'm enjoying the new update quite a lot, thank you for this!

It's only my opinion though, but I preferred the old green pollution more than the pink we have now. Just aesthetically, I mean. It might be nice if there was an option to choose in the menu which color you would like to denote the pollution?
Last edited:


Second Lieutenant
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No Population increase. makes me sad :(
I know Devs have said it is coming, but I was hoping it was going to be this update. for even more buildings has been introduced that needs workers including early game water collection.

The main reasons why I believe an increase is needed sooner than later is as followed;

Malnutrition - In order to avoid this you need to make enough Mix Meals (or Meat and Veggie meals) to feed your entire colony. this means you need a large portion of your population on farming, fishing or hunting. Which is not bad this can be done. But it does not leave you with many to do other jobs such as carriers.

Fire Wood - In order to make enough mixed meals for your colony you need cookhouses or even better Mess Halls. these not only take up more workers but need firewood. The issues is the Logging camps do not produce a decent amount of wood so you need to spam logging camps to support to Cookeries. (not to mention saunas and bakeries). I have found you need 2 logging camps to support 1 Cookery. and then you need 3 foresters (only 2 if foresters has a second work slot) to support 1 logging camp (with 2 workers).

Food Workers - All this means, for 1 full Mess Hall you need 9 workers. I have also found that 1 full Mess Hall only produces enough meals for around 20 people. which means you need 5 such set ups. Which means you need 45 people working in these buildings alone. Add the 1/3 of people farming and fishing/hunting, that brings the number of people out of 100 (soft cap) to 78 leaving you with 22 to do everything else.

Gate, Resource Gathers, Carriers, Resource Makers, Entertainment workers and Medical Workers.

And I haven't added in things like Guard Post, Maintenance Bays, Bio Factory, Environment Station, Water Carriers, Burial Pit, School or Trade center. Because some of these become obsolete and can be micro managed to only work a certain times when needed or only when practical.

Now my Math may not be exact. This is only what I have seen in my games. and yes I know its a survival game and things aren't meant to be easy nor efficient, And yes I know it is early access. I am just saying that after 4 straight patches that have added new buildings that require workers in them, it is time to increase the Pop Cap. I'm sure a slight increase would not hurt performances too much if at all.

Also a side note with all the new ways your colonists can die now with Attacks, Hostile colonists and the like you are not able to get above 100 via events for too long before some die. so the games where I was able to get 120 with the Soft Cap of 100 are Gone the most I have being able to get since Bandit attacks came in is 109 which quickly fell back to 100 after back to back Gate attacks.


Second Lieutenant
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I'm glad that there's a lot more things to do now. But yeah, with that many things to do around the colony, we need the workforce to support it. Else there's too much micro-management that would take away some of the "relaxing" nature of this game for me. Which is why I wasn't that keen on the past 2 updates.

But I suppose I should be grateful that this keeps me relying on the Resource Factory mod and allows me to keep learning modding and C# in general. :cool:

son of liberty

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I got busy and stopped keeping up with the updates. Does 1.8 include all previous updates?


Jul 2, 2020
Hello! I cant play, my screen is freeze. Firstly i saw my (planting) field have 124% and I reload worker and screen is freeze now ;( My save doesnt work(I have a loading screen all the time), but auto save working.. but if i do something with this field its the same again;(


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Sep 15, 2020
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I'm enjoying the new update quite a lot, thank you for this!

It's only my opinion though, but I preferred the old green pollution more than the pink we have now. Just aesthetically, I mean. It might be nice if there was an option to choose in the menu which color you would like to denote the pollution?

Same here! Definitely not a fan of the pink pollution and radiation...please give us the simple option to toggle it back green!