Ultimate Werewolf Artifacts includes 40 unique Artifact cards, each with a unique special power. Players are given an Artifact card at the beginning of an Ultimate Werewolf game, which they secretly view. At any point during the game, they may reveal their Artifact card, activating it for everyone to see.

Some Artifact cards are One-time use upon reveal, so once they are revealed their power is "used up." Other cards are Always in effect after reveal, so they provide some power that lasts throughout the rest of the game.

One of the best things about Artifacts is that it gives players who have more basic roles something extra to do during the game, while providing additional options for players who already have a more demanding role.