The trick-taking game 5人目 (Fifth Person) was released as part of the publisher ruri ruri games' (るりるりゲームズ) Spring 2018 box of trick-taking games, titled トリテセット Vol. 2 (Trick Taking Set Vol. 2).
The game is a cooperative horror trick-taking game set in a mountain cabin. While the game is intended to be played by 4 players, they'll soon find a fifth card has been played to each trick: but by who?
The power is out, and the players must keep a candle from burning out by playing candle-suited cards periodically in the hand.
There is an amulet suit, and players will use these amulets to ward off the mysterious Fifth Person at the end of the game.
The Fifth Person enters the game after the second trick, with their own deck of black cards. If a player wins a trick that contains the Black 9, that player is kidnapped, and cards played to tricks they or the Fifth Person win will not have their affects activated (such as re-lighting the candle.)
At the end of the game, the players win if the candle remains lit and all players have enough amulet to ward of any black cards they obtained. A partial victory is granted if at least one player does not have enough amulets. All players lose if the candle goes out.