Hunt the Mutant

 is a child's game played in Vault 101. A player is selected as the Mutant and hides while other players hunt for them. When the player is found, the game restarts with another player as the Mutant.

At one of Wally Mack's birthday parties in the 2260's, this game is played in the Atrium. Wally later mentions this game at the Lone Wanderer's tenth birthday party on July 13, 2268. By mentioning this game, Wally is unfavorably comparing his party to the Lone Wanderer's party.