In From the Abyss, a new expansion for Unfathomable, the SS Atlantica and its journey to Boston face even greater dangers. New, terrifying monsters emerge from the depths of the Atlantic Ocean to attack the ship, and the ocean waters have become so violent that they sweep passengers into the sea. New betrayals are here to sabotage the ship, and with the mythos deck doubling in size, new dangers threaten the Atlantica at every turn. Fortunately, the people on the ship have new tools at their disposal. In addition to eight new playable characters, players now have access to ally cards that move independently around the ship and help keep it afloat. New prelude cards can change the conditions at the start of the game, providing even more variety so that no game is the same as the last. With new abilities, items, and the brand-new boon cards, the battle for the SS Atlantica has never been so fierce!