Thursday, January 8, 2026

Sims 4 Fallout Shelter Challenge

 Sims 4 Fallout Challenge from Azrnyx

Fallout Challenge

Fallout Challenge – Sims 4

The world has been ravaged by an apocalyptic disaster years ago. You are the last surviving dweller in your vault. How you survive from here is up to you…

 Building your own Vault –

The bunker should have:

  • Barracks
  • Toilets
  • Power plant (optional – only for aesthetics)
  • An indoor garden
  • Somewhere to eat (you can have a kitchen but NO fridge.)
  • A library/study
  • A medbay
  • A lab
  • A workshop
  • A gym
  • A classroom (or somewhere for children to play/learn)
  • A common room
  • A broadcasting studio
Some of these rooms can be merged into one

The bunker should also be as deep as it can go – ensure your living spaces are as far from the radiation/outside world as possible

 To Start –

Build a vault/bunker or download one off the gallery

Start with an adult/YA sim who will be your overseer

Choose your difficulty:

  • Easy – Add 2 other dwellers to the household
  • Medium – Add 1 other dweller to the household
  • Hard – Add no other dwellers to the household

 Rules –

Only explorers may invite other survivors to your vault. The new dwellers need to go through a decontamination procedure in your medbay.

You may only add other C.A.S. dwellers depending on your chosen difficulty:

  • Easy – Every 1 game week
  • Medium – Every 2 game weeks
  • Hard – Never

Every dweller must have an assigned role - no use wasting resources.

In the event that the overseer dies, a new overseer will be voted in by the dwellers to replace him/her. If the overseer ages to ‘elder’ then the overseer may choose and train their successor.

The overseer is not to have any children. As the leader of the vault, the overseer’s number one priority should always be to the vault. This also removes complications when choosing a successor.

Anyone not following the rules will be exiled.

 Roles (Base Game)–

Overseer – The leader of your vault. He/she is the first dweller and is in charge of the vault and how it is run. When the Overseer dies, it is up to the vault to vote for a new one. Suggested Traits: Genius, Athletic

Explorer – The only dweller allowed to leave the safety of the vault. They have the skills required to survive in the wasteland and go looking for useful collectibles and other survivors. (anything found needs to go through a decontamination process) Suggested Traits: Athletic, Loves Outdoors

Scientist – The dweller responsible for research. They dedicate their day to learning all that they can about the apocalypse and trying to make the world habitable again. Suggested Traits: Genius

Engineer – The dweller responsible for ensuring your vault stays up and running. If anything breaks, this dweller is in charge of fixing it. They also use the woodworking table to make handy items for your vault dwellers to use. Suggested Traits: Genius

Gardener – The dweller responsible for gardening and ensuring that there is enough food for the vault habitants. This is the only source of food allowed (unless the explorer finds anything above ground) Suggested Traits:

Caretakers – The dwellers responsible for the upbringing of toddlers and children. They look after your young dwellers and ensure they have everything they need to survive and grow up healthy. They are also in charge of ensuring the vault remains a clean and healthy place to live. Suggested Traits: good, family oriented, neat

Radio Broadcaster – The dweller responsible for broadcasting to outside of the vault. You need to grow your vault population, right? So why not call the survivors to you rather than going out to find them. This dweller is also responsible for entertainment. You have no tv in your vault so the entertainer plays music to entertain the other dwellers. You can also have radios/sterios in your vault with this role active. Suggested Traits: creative

With this role active, you can add new CAS dwellers to your vault every:

  • Easy – 4 game days
  • Medium – 1 game week
  • Hard – 2 game weeks

New Dwellers – Survivors that join your vault are assigned a role at the overseer’s discretion, but generally roles are assigned based on the incoming dwellers traits.

Pregnant Dwellers – These dwellers are excused of their duties as looking after their baby is of the utmost importance.

Elders – Older dwellers will continue to work in their assigned role until they die. Everyone in the vault needs to pull their weight (there’s only so much pure air in your vault that everyone needs to pull their weight to stay). They are also responsible for teaching their replacement the ropes. They are your greatest source of wisdom and knowledge in the vault

  Roles (Expansions)–

Scientist (Get to Work) – The dweller responsible for research. They dedicate their day to learning all that they can about the apocalypse and trying to make the world habitable again. They also invent helpful machines for your vault and craft serums (using workstations found in the build/buy debug menu). Suggested Traits: Genius

Medic (Get to Work) – The dweller responsible for keeping the vault habitants healthy. Suggested Traits:

Engineer (Discover University) – The dweller responsible for creating robots and helpful machines to keep the vault up and running smoothly. Suggested Traits: Genius

Engineer (Eco Living) – The dweller responsible for ensuring your vault always has power and clean water. They are the only other role allowed to leave the safety of the vault, in order to check on solar panels and wind turbines above ground. They are also in charge of upcycling materials that the explorers find ruined in the wasteland and fabricating any new needed furniture. Suggested Traits: Genius, Maker

Companion (Cats and Dogs) – Add a pet to your vault. The explorer should be in charge of training your pet as it will go with the explorer whenever a requirement to leave the vault arises. This pet will help watch the explorers back in the wilderness as well as help find collectibles

 Helpful Mods –

MC Command Centre -  enables you to disable young dwellers from going to school as well as other helpful in game features: https://deaderpool-mccc.com/#/releases

Life Tragedies – enables you to have your sims die of fatal illnesses – radiation must have leaked into your vault somewhere! (disable all other life tragedies except for fatal illness). With this mod enabled, increase your explorers ‘tragedy occurrence speed’ whenever they leave the radiation free safety of the vault. Set it back to slower once your explorer returns: https://www.sacrificialmods.com/downloads.html

Zombie Apocalypse – Change your nuclear radiation ravaged world to a zombie apocalyptic one. With zombies walking the surface, your explorers need to be extra prepared for leaving the vault: https://www.sacrificialmods.com/downloads.html

Full House – Allows you to increase the number of sims in your household. No pesky limit of only 8 sims allowed: https://modthesims.info/d/536556#.VCb-x1oB5g8.twitter

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