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Unfathomable

Unfathomable

2021·Tony Fanchi, Corey Konieczka

Videos
69
Creators
54

Mainly reviews. Unfathomable is covered on BoardGameVideo.com by 31 reviews, 12 how-to-play guides, 10 recorded sessions, 10 unboxings, and 6 other videos.

3 - 6 players
120 - 240 min
Heavy weight: Expect a long teach

From BoardGameGeek

The year is 1913. The steamship SS Atlantica is two days out from port on its voyage across the Atlantic Ocean. Its unsuspecting passengers fully anticipated a calm journey to Boston, Massachusetts, with nothing out of the ordinary to look forward to. However, strange nightmares plague the minds of the people aboard the ship every night; rumors circulate of dark shapes following closely behind the ship just beneath the waves; and tensions rise when a body is discovered in the ship's chapel, signs of a strange ritual littered around the corpse. Lurking within the depths of the Atlantic Ocean are a swarm of vicious, unspeakable horrors: the Deep Ones, led by Mother Hydra and Father Dagon. For reasons unknown, they have set their sights on the Atlantica, and their minions, taking the form of human-Deep One hybrids, have infiltrated the steamship to help sink it from within. Each game of Unfathomable has one or more players assuming the role of one of these hybrids, and how well they can secretly sabotage the efforts of the other players might mean the difference between a successful voyage and a sunken ship. If you're a human, you need to fend off Deep Ones, prevent the Atlantica from taking too much damage, and carefully manage the ship's four crucial resources if you want any hope of making it to Boston, all while trying to figure out which of your fellow players are friends and which are foes. Everyone shares the same resource pool, but humans will try to preserve them while traitors will strive to subtly deplete them. Being able to tell when someone is purposefully draining the group's resources is harder than you think, especially when you take crises into account! At the end of each player's turn, that player must draw a mythos card. Each of these cards represents a crisis that the whole group must try to resolve together. Some of these crises, such as "Food Rationing", call for a choice that could potentially put the ship's passengers or resources at risk, while others, such as "Hull Leak", call for a skill test in which failure could have disastrous consequences. During a skill test, each player contributes skill cards from their hand to a face-down pile shared by the group. Once everyone has contributed (or chosen not to), the cards are shuffled, then revealed. If enough of the correct skills were contributed, then the group passes the test! But if the wrong skills were contributed, they can actually hinder the results, leading to failure. Thus, skill tests are dangerous opportunities for traitors to sabotage the humans' efforts, so you have to stay on your toes at all times. -description from the publisher

Unfathomable

Watch first

Learn to play

Unfathomable - How To Play45:45

Unfathomable - How To Play

Watch It Played

Watch It Played

Review

Unfathomable - How to Play - Review - Fantasy Flight Games - BoardgameNinja (English - Nederlands)15:02

Unfathomable - How to Play - Review - Fantasy Flight Games - BoardgameNinja (English - Nederlands)

BoardgameNinja

BoardgameNinja

Watch it played

Let's Play UNFATHOMABLE | Board Game Club2:00:00

Let's Play UNFATHOMABLE | Board Game Club

No Rolls Barred

No Rolls Barred

Which Unfathomable video should I watch?

Unfathomable has 69 videos from 54 creators: 31 reviews, 12 how-to-play guides, 10 playthroughs, 10 unboxings and 6 other videos. They date from 2021 to December 2025.

To learn the rules, start with "Unfathomable - How To Play" by Watch It Played, which runs 46 min. For a quicker teach, "Jeux Conseils # 41b - L'Insondable - Différences avec BSG et règles importantes" by Jeux Conseils runs 7 min.

For an opinion before you buy, start with "Unfathomable - How to Play - Review - Fantasy Flight Games - BoardgameNinja (English - Nederlands)" by BoardgameNinja. 28 creators have reviewed it. To see it played, watch "Let's Play UNFATHOMABLE | Board Game Club" by No Rolls Barred, one of 10 playthroughs.

If you like it, try Twilight Imperium: Fourth Edition, Star Wars: Rebellion, Eldritch Horror and Middle-Earth Quest, also by Corey Konieczka.

All videos

Unfathomable - Playthrough 2Playthrough1:31:48

Unfathomable - Playthrough 2

Chesborn

Chesborn

Unfathomable - Playthrough 1Playthrough52:31

Unfathomable - Playthrough 1

Chesborn

Chesborn

How to Play the Unfathomable BoardgameHow to play38:32

How to Play the Unfathomable Boardgame

Chesborn

Chesborn

Unfathomable Five-Player Playthrough (With From the Abyss Expansion) - Part 1Playthrough2:36:42

Unfathomable Five-Player Playthrough (With From the Abyss Expansion) - Part 1

Optimal Play

Optimal Play

Unboxing the Unfathomable boardgameUnboxing18:50

Unboxing the Unfathomable boardgame

Chesborn

Chesborn

Unfathomable + From the Abyss - UnboxingUnboxing24:31

Unfathomable + From the Abyss - Unboxing

Fishisforcat

Fishisforcat

TDG: Folded Space: Unfathomable + Expansion Insert4:39

TDG: Folded Space: Unfathomable + Expansion Insert

The Discriminating Gamer

The Discriminating Gamer

Unfathomable with Expansion - Playthrough & ReviewReview3:09:42

Unfathomable with Expansion - Playthrough & Review

Gaming Rules!

Gaming Rules!

Unfathomable (Fantasy Flight Games) Review & How to PlayReview46:14

Unfathomable (Fantasy Flight Games) Review & How to Play

Tabletop Sci-Fi

Tabletop Sci-Fi

Unfathomable - Part 1 | D&A PlaythroughPlaythrough1:09:22

Unfathomable - Part 1 | D&A Playthrough

Dice & Amigos

Dice & Amigos

Unfathomable Board Game Unboxing 4kUnboxing5:03

Unfathomable Board Game Unboxing 4k

AthexTube - Board Games & 3d Printing

AthexTube - Board Games & 3d Printing

Better Battlestar Galactica or just Cheaper? Unfathomable ReviewReview20:00

Better Battlestar Galactica or just Cheaper? Unfathomable Review

Nerds of the West

Nerds of the West

Unfathomable - How To Play45:45

Unfathomable - How To Play

Watch It Played

Watch It Played

Arkham Horror Unfathomable from Fantasy Flight Games PREVIEWED in 60ish Seconds3:37

Arkham Horror Unfathomable from Fantasy Flight Games PREVIEWED in 60ish Seconds

Arkham Chronicle

Arkham Chronicle

Unfathomable - How to set up your first game and assemble your components9:32

Unfathomable - How to set up your first game and assemble your components

Arkham Chronicle

Arkham Chronicle

Arkham Horror: Unfathomable - The Comprehensive Guide to protecting your boardgame cards12:26

Arkham Horror: Unfathomable - The Comprehensive Guide to protecting your boardgame cards

Arkham Chronicle

Arkham Chronicle

Abgrundtief - Wie spielt man das? (Regeln & Review)55:07

Abgrundtief - Wie spielt man das? (Regeln & Review)

Starkfels - Die Spielefestung

Starkfels - Die Spielefestung

Unfathomable Explained in 60ish Seconds - Fantasy Flight Games NEW Arkham Horror Boardgame3:38

Unfathomable Explained in 60ish Seconds - Fantasy Flight Games NEW Arkham Horror Boardgame

Arkham Chronicle

Arkham Chronicle

Insondable Como se Juega TUTORIAL Juego de Mesa | CONSEJOS & TÁCTICAS |22:07

Insondable Como se Juega TUTORIAL Juego de Mesa | CONSEJOS & TÁCTICAS |

Dummies Juegan a Juegos

Dummies Juegan a Juegos

Como jogar Unfathomable15:53

Como jogar Unfathomable

Jogamos?

Jogamos?

Jeux Conseils # 41b - L'Insondable - Différences avec BSG et règles importantes7:20

Jeux Conseils # 41b - L'Insondable - Différences avec BSG et règles importantes

Jeux Conseils

Jeux Conseils

Unfathomable - How to Play - Review - Fantasy Flight Games - BoardgameNinja (English - Nederlands)15:02

Unfathomable - How to Play - Review - Fantasy Flight Games - BoardgameNinja (English - Nederlands)

BoardgameNinja

BoardgameNinja

Unfathomable Review: A Wild, Chaotic Experience16:40

Unfathomable Review: A Wild, Chaotic Experience

Board Of It

Board Of It

TDG: Unfathomable17:45

TDG: Unfathomable

The Discriminating Gamer

The Discriminating Gamer

Does Unfathomable Replace Battlestar Galactica? Unfathomable Review34:46

Does Unfathomable Replace Battlestar Galactica? Unfathomable Review

Game Boy Geek

Game Boy Geek

Unfathomable in about 3 minutes3:50

Unfathomable in about 3 minutes

3 Minute Board Games

3 Minute Board Games

Hey, You Got Cthulhu in My Battlestar Galactica | Unfathomable Review22:43

Hey, You Got Cthulhu in My Battlestar Galactica | Unfathomable Review

Roll For Crit

Roll For Crit

Unfathomable | Rahdo Runthrough by Shea1:02:00

Unfathomable | Rahdo Runthrough by Shea

Rahdo Runs Through

Rahdo Runs Through

Unfathomable - Thoughts From The Corner12:01

Unfathomable - Thoughts From The Corner

Bower's Game Corner

Bower's Game Corner

Review by The Lucky Roll8:10

Review by The Lucky Roll

The Lucky Roll

The Lucky Roll

Unfathomable | Shelfside Review38:11

Unfathomable | Shelfside Review

Shelfside

Shelfside

Unfathomable: 3 Things in 3 Minutes Review #1043:00

Unfathomable: 3 Things in 3 Minutes Review #104

Nersi Games

Nersi Games

Unfathomable First Impressions16:51

Unfathomable First Impressions

Board Gaming Ramblings

Board Gaming Ramblings

Unfathomable Board Game Review27:11

Unfathomable Board Game Review

Legends of Nerdvana

Legends of Nerdvana

Unfathomable! A Battlestar Galactica remake that's actually good?14:41

Unfathomable! A Battlestar Galactica remake that's actually good?

The Northman

The Northman

Ludochrono - L’insondable8:57

Ludochrono - L’insondable

Ludovox

Ludovox

Unfathomable18:27

Unfathomable

Boardgame Opinions

Boardgame Opinions

Unfathomable Board Game Review by Board Game Hangover17:57

Unfathomable Board Game Review by Board Game Hangover

Board Game Hangover

Board Game Hangover

Unfathomable: Discussion33:34

Unfathomable: Discussion

Board Games UnLocked

Board Games UnLocked

Tutorial e Recensione Insondabili - Paranoia e Tradimenti sulla SS Atlantica40:49

Tutorial e Recensione Insondabili - Paranoia e Tradimenti sulla SS Atlantica

Il Puzzillo del Sud

Il Puzzillo del Sud

Незбагненне (Unfathomable). Огляд настільної гри18:54

Незбагненне (Unfathomable). Огляд настільної гри

Світ Настільних Ігор

Світ Настільних Ігор

Battlestar Galactica VS Insondabili - Chi Tradisce Meglio?10:56

Battlestar Galactica VS Insondabili - Chi Tradisce Meglio?

Il Puzzillo del Sud

Il Puzzillo del Sud

[REVIEW] JEUTALK#100 L'Insondable, aussi bien que Battlestar Galactica ?32:15

[REVIEW] JEUTALK#100 L'Insondable, aussi bien que Battlestar Galactica ?

Jeu DésCouvre

Jeu DésCouvre

Unfathomable - How to Play Video by Epitrapaizoume.gr39:50

Unfathomable - How to Play Video by Epitrapaizoume.gr

epitrapaizoume

epitrapaizoume

Abrimos y explicamos el Insondable! Terrorifico.12:28

Abrimos y explicamos el Insondable! Terrorifico.

CaWa Girona

CaWa Girona

Let's Play UNFATHOMABLE | Board Game Club2:00:00

Let's Play UNFATHOMABLE | Board Game Club

No Rolls Barred

No Rolls Barred

Unfathomable Runthrough2:11:12

Unfathomable Runthrough

Board Games UnLocked

Board Games UnLocked

Our first play of UNFATHOMABLE!1:40:35

Our first play of UNFATHOMABLE!

PlayingBoardGames

PlayingBoardGames

Unfathomable - Playthrough3:53:58

Unfathomable - Playthrough

Gaming Rules!

Gaming Rules!

Unfathomable Playthrough5:31:35

Unfathomable Playthrough

Rob's Gaming Table

Rob's Gaming Table

Παίζουμε Unfathomable | House of Nerds1:12:26

Παίζουμε Unfathomable | House of Nerds

House Of Nerds

House Of Nerds

Unboxing UNFATHOMABLE the NEW Arkham Horror Files boardgame from Fantasy Flight Games10:20

Unboxing UNFATHOMABLE the NEW Arkham Horror Files boardgame from Fantasy Flight Games

Arkham Chronicle

Arkham Chronicle

Insondabili unboxing [Gli Apriscatole]12:03

Insondabili unboxing [Gli Apriscatole]

La Tana dei Goblin

La Tana dei Goblin

Unboxing Unfathomable18:13

Unboxing Unfathomable

Meeple Mentor

Meeple Mentor

Unfathomable - Unboxing20:47

Unfathomable - Unboxing

Gaming Rules!

Gaming Rules!

Insondable - Unboxing - El club del dado11:29

Insondable - Unboxing - El club del dado

El club del dado

El club del dado

Unfathomable Unboxing + Q/A with Tony Fanchi56:27

Unfathomable Unboxing + Q/A with Tony Fanchi

Fantasy Flight Games

Fantasy Flight Games

8 of 54

Creators who cover this

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About Unfathomable

From BoardGameGeek:

The year is 1913. The steamship SS Atlantica is two days out from port on its voyage across the Atlantic Ocean. Its unsuspecting passengers fully anticipated a calm journey to Boston, Massachusetts, with nothing out of the ordinary to look forward to. However, strange nightmares plague the minds of the people aboard the ship every night; rumors circulate of dark shapes following closely behind the ship just beneath the waves; and tensions rise when a body is discovered in the ship's chapel, signs of a strange ritual littered around the corpse. Lurking within the depths of the Atlantic Ocean are a swarm of vicious, unspeakable horrors: the Deep Ones, led by Mother Hydra and Father Dagon. For reasons unknown, they have set their sights on the Atlantica, and their minions, taking the form of human-Deep One hybrids, have infiltrated the steamship to help sink it from within. Each game of Unfathomable has one or more players assuming the role of one of these hybrids, and how well they can secretly sabotage the efforts of the other players might mean the difference between a successful voyage and a sunken ship. If you're a human, you need to fend off Deep Ones, prevent the Atlantica from taking too much damage, and carefully manage the ship's four crucial resources if you want any hope of making it to Boston, all while trying to figure out which of your fellow players are friends and which are foes. Everyone shares the same resource pool, but humans will try to preserve them while traitors will strive to subtly deplete them. Being able to tell when someone is purposefully draining the group's resources is harder than you think, especially when you take crises into account! At the end of each player's turn, that player must draw a mythos card. Each of these cards represents a crisis that the whole group must try to resolve together. Some of these crises, such as "Food Rationing", call for a choice that could potentially put the ship's passengers or resources at risk, while others, such as "Hull Leak", call for a skill test in which failure could have disastrous consequences. During a skill test, each player contributes skill cards from their hand to a face-down pile shared by the group. Once everyone has contributed (or chosen not to), the cards are shuffled, then revealed. If enough of the correct skills were contributed, then the group passes the test! But if the wrong skills were contributed, they can actually hinder the results, leading to failure. Thus, skill tests are dangerous opportunities for traitors to sabotage the humans' efforts, so you have to stay on your toes at all times. -description from the publisher

Designers

Tony Fanchi, Corey Konieczka

Artist

Henning Ludvigsen

Publisher

Fantasy Flight Games

Categories

FantasyHorrorBooks & Novels

Mechanics

Area MovementHand ManagementHidden RolesTeam-Based Game
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