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SPECIAL in Fallout Shelter works slightly differently than in other games as Skills do not exist in this game. Each SPECIAL attribute increases dweller efficiency in various rooms, during combat or when performing certain tasks.

Keep in mind that although attributes can only be trained to a maximum of 10, they can still be increased to up to 17 through outfit bonuses. These additional points will not be visible on the dweller's SPECIAL bars but can be checked by tapping/clicking the bars, which brings up a more comprehensive menu that lists any and all bonuses.

SPECIAL Global Effects Vault Effects Exploration Effects Quest Effects
All Crafting Survivability (legendary junk in survival difficulty)
Small help finding weapons/outfits/recipes/junk
Some quests require certain SPECIAL to start
Strength Power generators / Nuclear reactors Larger contribution to survivability (version 1.15+)
Perception Water treatment / Water purification Small help with legendary junk (normal difficulty) Slower crit arrow speed
Endurance Dweller Health Nuka-Cola bottler Rad resistance (immunity at 11+)
Legendary junk (normal difficulty)
Larger contribution to survivability (version 1.15+)
Charisma Living room
Radio studio
Barbershop
Legendary junk (normal difficulty)
Intelligence Medbay / Science lab
Agility Diner / Garden Larger contribution to survivability Attack rate
Luck Rush chance
Chance for caps after production
Larger contribution to survivability
Finding caps
Legendary junk (normal difficulty)
Crit build rate

Strength[]

Improved at
Weight room

Strength determines:

Perception[]

Improved at
Armory

Perception determines:

Endurance[]

Improved at
Fitness room
FOS Endurance Table

A table showing the range of Health Points that can be achieved at different Endurance levels

Endurance determines:

Endurance is also the assigned skill for the storage rooms, although it will have no effect on those rooms.

Endurance determines how many hit points dwellers gain as they level up. Dwellers start with 105 health points. They seem to get 2.5 + (END * 0.5) health points each time they level up, so 17 points in Endurance will add 11 hit points per level compared to the minimum of 3 at END 1. This means that a level 50 dweller with 1 Endurance will have 252 hit points when at max level compared to 644 hit points, which a dweller whose endurance was maxed out at 17 from level 1 will have.

To achieve maximum health, a dweller must equip heavy wasteland gear (END +7) at level 1 while already having 10 points in Endurance themselves. At END 11 or more, the dweller becomes immune to the occasional radiation bursts they suffer while exploring the wasteland (note that this does not apply to real-time combat).

These hit points are not retroactive.

Charisma[]

Improved at
Lounge

Charisma determines:

  • The effectiveness of radio studios, by increasing the likelihood of attracting new dwellers.
  • The effectiveness of living rooms, by speeding up reproduction.
  • The speed at which appearance changes are applied at a barbershop.

Intelligence[]

Improved at
Classroom

Intelligence determines:

Agility[]

Improved at
Athletics room

Agility determines:

  • The effectiveness of food production rooms (diner and garden).
  • The Dweller's attack rate during quests.

Luck[]

Improved at
Game room

Luck determines:

  • Whether a production room also yields caps along with the normal room reward.
  • The chance of rush attempts succeeding.
  • The speed at which the critical hit meter fills during quests.
  • The amounts of caps found in the wasteland.
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