Which Assassin's Creed game takes place mainly in ancient Greece?

Assassin's Creed Odyssey takes place mainly in ancient Greece.

Released in 2018, Odyssey is set during the Peloponnesian War in the fifth century BCE. Players choose either Kassandra or Alexios as the playable mercenary, while the other becomes an important character in the story.

The game includes Athens, Sparta, the Aegean islands, and other Greek regions. Its world combines historical figures and events with the series' fictional conflict involving the Isu and the Cult of Kosmos.

Odyssey follows Assassin's Creed Origins chronologically, although Origins is set centuries later in historical time? In fact, Origins takes place in the first century BCE, so Odyssey is earlier. The two games are often paired because both use extensive open-world role-playing systems.