The Peloponnesian War begins in 431 BCE in Assassin’s Creed Odyssey’s historical setting. The game follows a fictional mercenary during the conflict between Athens and Sparta and their allied states.
Odyssey takes place during the fifth century BCE, when the classical Greek world is divided by the long-running war. The player can choose Kassandra or Alexios as the protagonist, while the story travels through mainland Greece, the Aegean islands, and other locations linked to Greek history and mythology.
The war historically lasted until 404 BCE, when Athens surrendered to Sparta. The game uses this real conflict as a backdrop for a branching adventure involving family relationships, political factions, the Cult of Kosmos, and the precursor civilization. The war’s start date should not be confused with the later date of Athens’ defeat.