Which Assassin's Creed title is set primarily during the Peloponnesian War?

Assassin's Creed Odyssey is set primarily during the Peloponnesian War.

The game takes place in ancient Greece from 431 to 422 BCE, during the conflict between Athens and Sparta. Players control a mercenary descended from the Spartan king Leonidas I, and the story travels through regions and islands shaped by the war. Historical figures including Socrates, Pericles, and Alcibiades appear alongside fictional characters.

Odyssey is sometimes confused with Origins because both games are set in the ancient world and use role-playing systems. Origins takes place in Ptolemaic Egypt, several centuries later than the events of Odyssey. Valhalla focuses on the Viking expansion into England, while Mirage is set in ninth-century Baghdad.

Although the game is part of the Assassin's Creed franchise, its historical narrative occurs before the formal emergence of the Hidden Ones shown in Origins. The series' mythological elements are presented through its fictional world rather than as a literal history textbook.