Mister Sandman

Mister Sandman is a perk in Fallout 3, Fallout: New Vegas, Fallout 4 and Fallout 76.

Fallout 3 and Fallout: New Vegas


Silently kill any sleeping person and bonus XP for each such kill.

Fallout 4


Increased damage from silenced weapons.

Fallout 76


Silenced weapons do an additional +25% sneak attack damage at night.