Kephallonia is the island home of Kassandra or Alexios in Assassin’s Creed Odyssey.
Odyssey begins in 431 BCE, during the Peloponnesian War between Athens and Sparta. The player chooses Kassandra or Alexios as the protagonist, while the other sibling becomes a central character in the family story. The opening chapters take place on Kephallonia, where the protagonist works as a misthios, or mercenary, before traveling across the wider Greek world.
Kephallonia is based on the real Ionian island of Kefalonia, whose modern Greek spelling is commonly rendered Kefalonia in English. The game uses the form “Kephallonia” for its historical setting. Its landscapes, settlements, and nearby islands are dramatized for gameplay, but the broader geography reflects ancient Greece.
The island should not be confused with Crete, Rhodes, or Euboea, all of which are real Greek islands that appear in or relate to the ancient Mediterranean world. Odyssey’s map also includes mainland regions such as Attika, Lakonia, and Macedonia.