Snow Mansion (スノーマンション)

User summary
スノーマンション (Snow Mansion) is a simple, short filler; a deduction game for a small number of players. No game master needed, all you have to do is play four cards.

Each player is dealt a duplicate preset hand of action cards before the game. Some are "Murder", some "Investigate (Accuse)", some "Guard", and so on.But unlike Werewolf-style games, there is no predefined role. You choose your own role in game.

There are four rounds in a game, and you play one card per round. If you ever play a "Murder" card, you took the "Murderer" role. Otherwise, you are the opposing "Investigator" role. Since you can't draw additional cards in the game, if you check your remaining hand it is obvious which role you played.

You must act as either a Murderer trying not to get caught, or as a Detective to accuse the culprit. Every player has an urge for murder, but if you failed to cover your tracks, you would be accused and have to drop out of the game.

You get 5 points if you survive, 5 points if you successfully manage to murder the mansion owner, 3 points for killing other players, or 4 points for a successful accusation... The player with the most points at the end of the fourth day is the winner.

Should your murderous intentions rule you or keep your good will? Should you act as a murderer or act as a detective? It's all up to you.

After the first edition was released, a revised edition was produced. An additional set of cards was added for a 6 player game, the artwork was modified and the card text and manual were improved to be more precise.

Publisher's summary
「スノーマンション」はゲームマスター等の必要無しにお手軽にカードを四枚選択するだけの
短時間・少人数で遊べる推理テイストな隠匿系ゲームです。
他のプレイヤーにバレないよう殺人を行ったりもしくは探偵として殺人犯を指摘し勝敗を競います。
プレイヤーは各々殺意を持っていますが
殺したとバレれば殺人犯として吊るし上げられゲームから脱落してしまいます。
生き残れば5点、館の主を殺せば5点、他の誰かを殺せば3点、殺人犯を告発すれば4点・・・

四日目終了時に点数の一番高いプレイヤーの勝利です。
殺意に身を委ねるか良心で抗うか……殺人犯になるか探偵になるかはあなた次第です。