Unfathomable

A 1913 transatlantic voyage becomes a survival and social-deduction scenario aboard a steamship plagued by nightmares, strange rituals, and creatures from beneath the waves. Players take hidden roles as either human crew/passengers trying to keep the ship afloat and manage four shared resources, or as hybrid traitors secretly working to sabotage those efforts. Each turn triggers a mythos crisis that the group must resolve together, often requiring resource choices or skill tests. Skill tests have players contribute cards face-down to a pooled shuffle, so contributions are revealed anonymously and can help or deliberately harm the outcome, creating tension between cooperation and covert betrayal.

Players: 3–6 best 6
Playing time: 120–240 min
Age: 14+
Complexity: 3.1 / 5

7.8 on Ludoya from $56.66Novel-basedBluffingArea MovementHand ManagementVariable Player Powers

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About the game

Design: Corey Konieczka
Tony Fanchi
Art: Henning Ludvigsen
Publisher: Fantasy Flight Games

Expansions

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Unfathomable: From the Abyss2024

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Full stats in Ludoya

245
Plays logged: 630
Players: 2h 50m
Average play: 216
In collections: 25
On wishlists: 1
Pre-ordered

7.8/10

from 63 Ludoya reviews

the-fire-archmage-ninja7.0
Battlestar Galactica board game, of which this game is a reskin, is better.
First impressions · 1 play
Toni Cutillas7.9
- Base -
First impressions · 2 plays
Владимир Андреевич9.4
Отличный представитель школы геймдизайна АмериТреш. Игра со скрытым предателем. Интересно и очень насыщенно. Много действий, много вариантов взаимоотношений и как результат множество вариантов решения проблем. Веселье 5/5 · Взаимодействие 5/5 · Привлекательность 5/5 · Оригинальность 4/5 · Реиграбельность 4/5 · Доступность 4/5
First impressions · 1 play

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Rules questions

Answered from the rulebook by Ludoya's rules assistant.

What happens during my turn, and do I draw a Mythos card before or after my actions?

Take the steps in order: receive skills, perform two actions, resolve a Mythos card, then discard down to 10 skill cards if needed. You may choose the same action twice. (Rulebook, pp. 10, 13)

Can I move only to an adjacent space?

No. A move action lets you move to any ship space except the Brig or Sick Bay; characters cannot move to water spaces. (Rulebook, p. 10; Rules Reference, p. 14)

How do skill checks work—do opposing cards count against us?

Yes. Add the values of supporting-skill cards and subtract the values of opposing-skill cards; the check passes if the result meets or exceeds its target. Two chaos cards are also added face down, and players may secretly contribute cards. (Rulebook, p. 16)

Can I use a skill card’s Action ability without spending one of my actions?

No. An ability labeled “Action:” costs one action; to use one on a skill card, reveal and resolve it, then discard it. Other skill-card abilities can be played during any player’s turn. (Rulebook, pp. 10–11; Rules Reference, p. 13)

If I’m in Sick Bay, do I still draw my full skill set?

No. During your Receive Skills step, draw only one card of your choice from your skill set while in Sick Bay. You can leave by spending a move action. (Rulebook, p. 10; Rules Reference, p. 13)

Do we win as soon as the waypoint cards add up to 12 distance?

No. After the waypoint cards total at least 12, the travel track must advance to Arrive one more time for the humans to win. (Rulebook, p. 14; Rules Reference, p. 17)