At Eternity's Hatch is a mystery puzzle adventure for PC set aboard a 1950s research vessel. Stranded at sea in an alternate timeline, you must utilise the ship's time-travel abilities to uncover information, solve puzzles across multiple timelines and alter the past to return home. With puzzles tied to narrative, you will discover secrets about the ship’s origin, its enigmatic captain, and his quest that has led him to the Greenland Sea, in the hope that you will eventually understand enough to control the forces of science and nature at your whim, playing your part to determine the outcome of the story.

The game will be available on PC and is designed for fans of narrative-driven, atmospheric puzzle games, such as Outer Wilds and Return of the Obra Dinn, who are motivated by curiosity, love uncovering layered mysteries, and appreciate games that reward observation and thoughtful problem-solving.