This study examined the relationship between werewolf-game experience and beliefs about lie clues. The participants included 203 undergraduates with no werewolf-game experience, and 42 werewolf-game fans, and 24 werewolf-game stage actors (Jinrou TLPT actors). They were asked to respond to a questionnaire. Two main results were observed. First, there were no significant differences between the three groups regarding their confidence in lie detection. Second, with respect to beliefs regarding the reaction to lying, werewolf-game fans and Jinrou TLPT actors believed that changes were likely to occur in remarks, while undergraduates believed that changes were likely to occur in bodily reactions.