Which Assassin's Creed game is set chiefly in Ptolemaic Egypt and follows Bayek of Siwa?

Assassin's Creed Origins is set chiefly in Ptolemaic Egypt and follows Bayek of Siwa.

Released in 2017, Origins tells the story of Bayek, a Medjay from the Siwa Oasis. His investigation into a personal tragedy brings him into conflict with the Order of the Ancients, a secret organization that helps establish the historical foundation for the later Templar Order. Bayek and Aya eventually help create the Hidden Ones, the predecessor of the Assassin Brotherhood.

The game depicts Egypt during the reign of Ptolemy XIII, when the kingdom is entangled in a power struggle involving Cleopatra and Julius Caesar. Its large map includes Alexandria, Memphis, Cyrene, deserts, villages, and archaeological sites.

Origins is not the same as Odyssey, which is set in fifth-century BCE Greece and features a choice of playable mercenary protagonists. Valhalla follows a Viking protagonist in ninth-century England and Norway. Origins also redesigned the series as a more explicit action role-playing game with levels, loot, and customizable equipment.