Unfathomable

Unfathomable is an eldritch horror deduction board game designed by Tony Fanchi and Corey Konieczka, and published in 2021 by Fantasy Flight Games. In the game, players attempt to maintain a steamship as it crosses the Atlantic Ocean while being attacked by monsters from the Deep and traitorous players in their midst. It is an adaptation of Battlestar Galactica: The Board Game.