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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.

Room Speed Effects Vault Effects Exploration Effects Quest Effects
Strength Power generators / Nuclear reactors Higher chance to open lockers
Perception Water treatment / Water purification Finding weapons, outfits, recipes or locations with better loot Slower crit arrow speed
Endurance Nuka-Cola bottler With higher Endurance, bigger health increases upon leveling up Rad resistance (immunity at 11+)
Legendary junk (normal difficulty)
More HP
More HP
Charisma Living room
Radio studio
Barbershop
Legendary junk (normal difficulty)
Intelligence Medbay / Science Lab
Agility Diner / Garden Huge contribution to survivability Faster attacks
Luck Rush chance

Chance for caps after production

Huge contribution to survivability

Finding caps

Legendary junk (normal difficulty)

Faster crits

Strength[]

Improved at
Weight room

Strength determines:

Perception[]

Improved at
Armory

Perception determines:

  • The speed of water production in the water treatment and water purification facilities
  • The speed of crafting in the weapon workshops for 55 out of 175 weapons.
  • The speed of the critical hit indicator during quests
  • Chances of finding locations in the wasteland
  • Makes critical hits more accurate. It does so by slowing down the speed at which the critical hit cursor moves in quests.

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 increases the speed at which the Nuka-Cola bottler creates food and water. Endurance can also increase the speed of crafting in the weapon workshops for 18 out of 175 weapons. It 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 and living rooms by increasing the likelihood of attracting new dwellers for the former and speeding up reproduction for the latter. Additionally, it reduces the time needed to wait for a change after using the barbershop.

It is also used during wasteland exploration to help explorers succeed in encounters with "civilized" persons or groups.

Intelligence[]

Improved at
Classroom

Intelligence determines the effectiveness of medbays and science labs. Higher intelligence speeds up experience gain for performing tasks in the vault. Intelligence also increases the speed of crafting in the Weapon workshops for 13 out of 175 weapons and for 18 outfits in the Outfit workshop.

In the wasteland, intelligent dwellers have better chances at succeeding in encounters with wounded civilized persons (such as injured sheriffs, wounded slaves, etc.), as well as dealing with certain enemy types. Dwellers with high Intelligence also have an increased chance of finding stimpaks and RadAway.

Agility[]

Improved at
Athletics room

Agility determines the effectiveness of food production rooms (diner and garden).

In quests or in the wasteland, it determines how many shots dwellers can fire before the enemy does (effects how quickly a dweller fires their weapon) or how much damage the dweller can avoid when fleeing from hopeless battles.

Luck[]

Improved at
Game room

Luck determines if a production room also yields caps along with the normal room reward (or extra caps after a successful rush attempt). Luck also affects the chance of rush attempts succeeding.

In the wasteland, it increases the chances of finding items when dwellers go out on quests and explore locations in the wasteland. The higher the Luck, the better the items. During quest combat, it increases the speed at which the critical hit meter fills. In the wasteland, it increases the caps found.

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