Assassin's Creed Odyssey is primarily set during which ancient conflict?

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

The game takes place in ancient Greece beginning in 431 BCE, the opening year traditionally associated with the war between Athens and Sparta. Players explore a divided Greek world shaped by battles, alliances, political rivalries, and competing city-states.

The player chooses either Kassandra or Alexios as the protagonist, although the game's canonical novelization identifies Kassandra as the canon character. The story also includes historical figures such as Socrates, Pericles, and Hippocrates.

Odyssey uses the historical conflict as a setting rather than offering a strict simulation of every campaign. Its open world combines real locations with fictional quests and mythological elements. The Peloponnesian War lasted until 404 BCE, but the game's narrative does not reproduce the entire conflict year by year.