https://www.gamespot.com/articles/learn-about-the-history-behind-assassins-creed-ori/1100-6454400/

Assassin's Creed Origins has finally arrived, and it makes some major changes to Ubisoft's popular stealth series. The most prominent is undoubtedly its new setting. For the first time, Origins takes the Assassin's Creed series to ancient Egypt during the time of Cleopatra, recounting the story of Bayek, the last Medjay, and the beginnings of the Assassin Brotherhood.

While the new setting has allowed the developers to introduce many new gameplay elements, from the ability to ride camels and slide down pyramids to vicious hippos and gladiator battles, it isn't merely window dressing for the adventure, but an integral component of the story. Even more so than previous installments, Assassin's Creed Origins is suffused with history, to the point that Ubisoft will release a combat-free Discovery mode next year that takes players on guided tours to better learn about ancient Egypt.