One Night Ultimate Werewolf is a fast-paced game for 3-10 players where everyone is dealt a secret role. Many of these roles have special abilities that will aid that player in gaining information. In the course of only one night and the following morning, the players will determine who among them is a werewolf...hopefully. One Night Ultimate Werewolf is a condensed version of the party game Ultimate Werewolf that does not require a moderator. There's no elimination, and each game lasts about 10 minutes.