Which Assassin's Creed game introduced dialogue choices and multiple endings to the main series?

Assassin's Creed Odyssey introduced dialogue choices and multiple endings to the main series. Released in 2018, it lets players shape conversations, relationships, quests, and important outcomes through selected responses.

The game is set in ancient Greece during the Peloponnesian War. Players choose either Kassandra or Alexios as the protagonist, while the other becomes a major character in the story. Because the question concerns the game feature rather than the player character, the title itself has one clear answer.

Odyssey expanded the role-playing structure introduced in Origins. It added more branching quests, equipment customization, naval travel, and a large map covering mainland Greece and islands. Its choices do not turn the game into a completely different story at every moment, but they can affect character fates and the ending of the family narrative.