A downloadable story expansion for Assassin's Creed Odyssey, The Fate of Atlantis was developed by Ubisoft Québec and released in 2019 across PlayStation 4, Xbox One, PC, and later PlayStation 5, Xbox Series X|S, and Google Stadia. Structured as a three-episode arc with each installment arriving approximately six weeks apart, the expansion continues the role-playing and adventure framework of the base game while pulling the protagonist into the mythology surrounding the legendary sunken city of Atlantis. Across its episodes, players contend with mythic creatures as they gradually unravel the secrets concealed within that fabled underwater civilization. The episodic format allows the narrative to unfold in distinct chapters, giving each segment room to develop its own encounters and revelations within the broader arc of uncovering what lies beneath Atlantis.