https://wccftech.com/odyssey-storyline-inspired-greek-tragedy/

In an interview with the Official Xbox Magazine (October 2018, issue 168), Creative Director Jonathan Dumont revealed that the main storyline of Assassin’s Creed Odyssey was inspired by a Greek tragedy, though he didn’t specify which one.

He also discussed the branching choices available to players in Assassin’s Creed Odyssey, a first for the franchise. They’ll be tough, he reckons, but not punishing in any way.