Assassin’s Creed Odyssey is a 2018 action role-playing video game developed by Ubisoft Quebec and published by Ubisoft. It is the eleventh major installment, and twentieth overall, in the Assassin’s Creed series and the successor to 2017’s Assassin’s Creed Origins. Set in the year 431 BC, the plot tells a fictional history of the Peloponnesian War between Athens and Sparta. Players control a male or female mercenary (Ancient Greek: μίσθιος misthios) who fights for both sides as they attempt to unite their family and uncover a malign cult.
The game is set in 431 BC, four hundred years before the events of Assassin’s Creed Origins. It recounts the secret fictional history of the Peloponnesian War, which was fought between the city-states of Greece. The player takes on the role of a mercenary and is able to fight for the Delian League, led by Athens, or the Peloponnesian League, led by Sparta. The game’s main storyline has the player character attempting to restore their fractured family after they and their sibling were thrown off a cliff in their youth and left for dead by their father by command of the Spartan oracle. Parallel quest lines deal with the extirpation of a malign cult spanning the Greek world, and the discovery of artifacts and monsters from Atlantean times.