Assassin’s Creed Odyssey is an open-world action RPG developed by Ubisoft and set in ancient Greece during the Peloponnesian War. Players choose between siblings Alexios or Kassandra and embark on an epic journey from mercenary to legendary hero. The game features massive landscapes, naval combat, branching dialogue choices, and deep RPG progression. With mythological elements, historical figures, and dynamic battles between Athens and Sparta, it offers one of the largest and most immersive worlds in the Assassin’s Creed series.