This page describes the SPECIAL implementation in Fallout Shelter.
Each SPECIAL attribute increases dweller efficiency in various rooms, during combat or when performing certain tasks. Although attributes can only be trained to a maximum of 10, they can still be increased to up to 17 through clothing 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 Increase
General effects on gameplay
|Power generators / nuclear reactors
|+Atk, +Def, +Picklocker
|Water treatment / water purification
|+Finding places, +Finding more items, +Better Quality Items
|-Critical hit speed
|+HP, Less radiation
|Radio studios / Living Rooms
|+Meeting "civilized" people
|Medbay / science lab
|Diner / garden
|+Fire rate, +Escape
|+Items, +Item quality, +Faster critical hit charge