User summary: 探偵たちの長い夜 (Tantei Tati no Nagai Yoru) in English literally means The Longest Night for Detectives. In this game, players are detectives staying in a cottage on a snowy mountain, and a murder happens there. Players have to find out the truth of the murder within a limited time. The game is for three players only. Victory condition Before the game ends, players must identify the victim, scene, method, and criminal who committed the murder. The first successful player(s) scores one point. Play three games and the highest scorer is the grand champion. Investigation and deduction Each turn, you name a person, method, and scene, and see whether other players have those cards or not. Other players place the named cards in front of them face down. You may see the identity of only one of them. Repeat this process until you are sure which cards involved in the murder (not in any player's hand), then record your answer secretly. Publisher's summary: ◇概要 雪の山荘でおきた殺人事件をゲーム化したものです。 殺された人物と殺した人物が分からないという状況にあります。 プレイヤーは探偵となり、事件の真相を制限時間内に突き止めます。 ◇勝利条件 伏せられた4種類、5枚のカードを全て言い当てられたら勝ちです。 3回遊んで1番多くの勝利コインを集めたプレイヤーが優勝します。 （被害者：2æžšã€æ®ºå®³å ´æ‰€ï¼š1枚、凶器：1枚、犯人：1枚） ◇調査と推理 èª¿æŸ»ãƒ‘ãƒ¼ãƒˆã§ã€Œäººç‰©ãƒ»å‡¶å™¨ãƒ»å ´æ‰€ã€ã‚’æŽ¢ã‚Šã€æŽ¨ç†ãƒ‘ãƒ¼ãƒˆã§æŠ«éœ²ã—ã¾ã™ã€‚