In Sailor Moon Crystal: Imposterous, players take turns asking intriguing and open-ended questions related to the Sailor Moon Crystal series. Each player writes down an answer that they think will match the answer given by other players. The more answers a player has in common with the others, the more points they receive. The suspicious player with the fewest points each round, i.e., the one whose answers are most dissimilar from those of other players, might be the imposter and their pawn moves down the game board.
When a player — or multiple players! — exit the last space (Level 6) of the game board, the game ends with the imposter(s) having been revealed. All the remaining players win the game and rescue their captured teammate