Gloomy vaults beneath Paris that conceal secrets. Following the disappearance of a friend, the players dare to step into the catacombs, an underground labyrinth full of riddles. Using deductive reasoning and team spirit, they must find hidden objects, crack codes, and get closer to the secret piece by piece. The game offers a unique experience because game materials may be altered. Once the riddle is solved, the game remains distinctive and cannot be replayed.