ultimate toxic fallout guide rimworld

Toxic fallouts in Rimworld can be tough, especially if you don‘t know how to survive it. The most frightening thing about a toxic fallout is uncertainty – they can hit your for as long as in-game year! There are loads of things you should consider before even facing a fallout. However, if you are in a situation where you need to act fast – we are here to help you. Prepare to learn, build and hunt!

What is toxic fallout in Rimworld?

This event is very similar to radiation. it is a poisonous cloud, which gradually settles down. This cloud comes from a distant chemical fire.

The situation this event creates can be lethal if your colony is not prepared for it. It kills every living creature over time, including plants. So, expect to lose all trees and animals, which aren’t under a roof.

And remember: you don’t need to be indoors to survive toxic fallouts – roof is a must.

Rimworld toxic fallout survival tips

Probably one of the most important things you need to know to survive toxic fallouts is proper roofing. When you start a colony, it’s a very good idea to build your base inside mountains. This strategy will help not only in this situation, but also in defending your colony.

Some players like to build freely and they tend to create a village-type colonies, which consist of separate rooms. To solve this problem, you can build a roof all over your colony, just like in our example below.

expand roof areas
Expanding a roof area to protect colony from toxic fallouts

Create an indoors-limited area

If you aren’t already familiar with the possibility of limiting allowed areas – you should a create a separate area and call it “Toxic Fallout”. To do that, just click “Restrict” at the bottom menu, choose “Manage areas…” and create a new area. You can mark that area after you create it – just click “Architect”, then “Zone” and “Expand allowed areas”. Once you have a new area set up, you can assign your colonists to it in the “Restrict” tab.

Remember to create this area carefully, because creating an unnecessary spot outside will lead to colonists cleaning and observing it. Make sure that colonists have access to bedrooms, food and recreation room – it’s all they need to survive physically and mentally.

Gather as much food and wood as possible

Once a toxic fallout begins, order your hunters to hunt all animals on your area, because they will die of poison anyway. And don’t even think about waiting for these animals to die and gather them afterwards – as soon as they die of toxic fallout, they rot immediately. Also harvest all your crop and consider collecting all berries around your area. Also consider building a hydroponics basin, which will let you grow plants inside – check out our guide about fastest growing crop in Rimworld.

You may also need wood for structures, furniture, fuel or repairing things. You probably can’t cut down all trees on your map, but take some time to collect as much wood as possible. Still don’t know how much wood to get? Well, you may need wood for a week, or even a year…

Build a nice and enjoyable interior

Colonists love warmth, beautiful interiors and recreational stuff. Some heaters (or coolers), carpets, statues, flower pots, pool tables will do the trick. Always keep your rooms clean, pay more attention to colonist needs and try to fulfil them. For example, some people love to be outdoors and they’ll get mood penalties for not being able to go outside. Mood boosts from spacious interior, impressive dining room, recreational activities will definitely cover small penalties.

So, build a nice and big table, dining chairs, armchairs, pool table, horseshoes pin (they love it) etc. Moreover, if furniture is high quality – a bigger mood boost is guaranteed!

rec room to hide from toxic fallout
Nice rec room for your colonists to hang out in

Colonists can spend some time outside

Believe it or not, there is one good thing about toxic fallouts – fallout-related health problems aren’t permanent. Moreover, you won’t need to use medicine to heal toxic buildup – it will disappear over time. However, don’t get too greedy. Let your colonists go outside only if necessary and only for short time periods. Lastly, check their health regularly to make sure the toxic buildup still isn’t too strong.

You can just… leave

These events can be too rough for some players and trying to survive them by staying inside is not an option. In this case, you can form a caravan and travel to another area, because yes, toxic buildup only occurs in a single area – not a whole map.

Pack all food, medicine, some weapons, clothes and some materials like steel or wood to build your first shed. However, it’s a pretty good idea to have a few decent rooms already built for your colonists in other areas if some crucial events happen.

Toxic fallout protection suits

If you are a fan of mods, you can try this mod. It provides you protection suits, which will help in various chemical situations. You can wear other clothes underneath it too, so that your survivors wouldn’t get cold during winters.

Get ready for explosions!

All unprotected animals will die because of this event, including boomalopes. They explode once they die creating many spot fires in your area. Rain will easily extinguish them, but if it’s dry outside – these fires will spread and may even reach your colony! At least you don’t need to worry about wild plants or animals as there’ll be none of them left at that point.

Toxic fallout in Rimworld
No animals or plants left in a jungle biome a few days later

Don’t get too hard on your colonists

Once you get hit by a toxic fallout, it’s going to be the biggest problem for as long as it’s active. For example, even raids aren’t as dangerous, because all enemies will get hit by a toxic buildup. Especially those, who want to take some time and prepare before attacking you – we have experienced cases when raiders just don’t make it and die before even seeing us.

The only stress your colonists experience during such situations will be created by you. As we mentioned before, it’s totally OK to spend some time outside, because colonists can recover from toxic buildup very quickly and easily. Just make sure that they spend most of their time inside. And if you know that your food supply is too low for a toxic fallout – create a caravan and go away for a while.

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