Arkham Horror Files: Unfathomable

The steamship Atlantica sails towards Boston, but mysterious shadows linger just beneath the surface, remaining out of view. The ship's passengers exhibit an eerie fixation, gazing out to sea with a silent, desperate longing. The investigators are haunted by unsettling underwater nightmares, and now, a passenger has been murdered.

In this game of suspicion, hidden loyalties, and devious tactics, players take on the roles of steamship commanders, but not all can be trusted. As monstrous Deep Ones emerge from the abyssal depths, any player might secretly be a malevolent cultist or a horrifying hybrid Deep One. The investigators must remain vigilant, for any lapse in trust could spell doom. Battle the swarming Deep Ones, expose the traitors, and navigate the Atlantica safely home in Unfathomable!