Sneak (perk)

Sneak is a perk in Fallout 4, Fallout 76, and Fallout: The Board Game.

Behind the scenes
The workings of sneaking in general and the associated perk/skill underwent a steady evolution with each new Bethesda RPG. One difference is how the AI reacts to an undetected opponent. In Fallout 3, everyone knew instantly where the player character was as soon as the fight started. In Skyrim, opponents would search for the player character, but in a non-smart way and simply run to the location that they saw or heard something. In Fallout 4, opponents take evasive maneuvers, run in unpredictable ways, jump from cover to cover and try to take a detour in order to flank the player character.

Bugs
Sometimes, NPCs will turn hostile when stealing from them, even if player character was not caught and was hidden.

Fallout: The Board Game
Once obtained, it can be discarded to sneak for the rest of the turn. Enemies can not stop the player character from performing actions in the same space as them. Enemies with the aggressive trait will also not attack the player character.

Gallery
Schleichen (Extra) Sigilo (extra) Furtivité (compétence) Лазутчик