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Fantasy Flight Games



Regular price $71.99
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Unfathomable: Horror on the High Seas

The Steamship Atlantica makes way to Boston, but dark shadows trail the ship, staying just out of sight beneath the waves. Your fellow passengers seem unnaturally fixated, staring out to sea with a silent, desperate longing. Your dreams are plagued by eerie underwater nightmares. And now, a passenger has been murdered.

Suspicion, hidden loyalties, and devious strategy rule the day! Unfathomable puts you and your fiends in command of a steamship, but not all of you can be trusted. While monstrous Deep Ones stream forth from the crushing ocean depths, any player could secretly be a nefarious cultist or a horrifying hybrid Deep One. Don't turn your back on anyone—it will take all your cunning to save their ship from a watery grave.
Battle swarming Deep Ones, uncover the traitors, and steer the Atlantica safely home in Unfathomable!

Condition: New

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Game Details

Suggested Ages: 14 and up
Number of Players:
3 to 6
Playing Time:
2 to 4 hours

Designer: Fanchi, Tony
Henning Ludvigsen
Publisher: Fantasy Flight Games


Horror, Hand Management, Hidden Roles, Team-Based Game, Traitor, Variable Player Powers

Awards & Honors


1 game board with 4 resource dials, 22 plastic monster figures, 10 character sheets, 3 traitor reference sheets, 6 player reference sheets, 10 character standees, 1 current player token, 4 traitor rings, 9 passenger tokens, 1 8-sided die, 1 travel token, 1 ritual token, 14 loyalty cards, 70 mythos cards, 2 title cards, 20 spell cards, 20 waypoint cards, 20 item cards, 9 ship damage cards, 10 feat cards, 126 skill cards, rules reference, learn to play