In Assassin's Creed Mirage, Baghdad is Basim's primary setting.
Mirage follows Basim Ibn Ishaq before his larger role in Assassin's Creed Valhalla. The game is set mainly in ninth-century Baghdad during the Islamic Golden Age, presenting a compact urban environment centered on investigation, stealth, and movement through the city.
Basim begins as a street thief and becomes connected to the Hidden Ones, the predecessor organization of the later Assassin Brotherhood. His missions take him through Baghdad's districts while he investigates the Order of the Ancients and his own unusual visions.
The city is not merely a historical label: Mirage depicts locations and institutions associated with Abbasid Baghdad, including scholarly and commercial life. Players may confuse the setting with Cairo or Constantinople because those cities appear elsewhere in the franchise, but Baghdad is Mirage's defining location.