Assassin's Creed Mirage is primarily set in ninth-century Baghdad.
The game follows Basim Ibn Ishaq as he develops from a street thief into a Hidden One. Its historical setting is Abbasid Baghdad during the Islamic Golden Age, and the city is divided into districts that reflect important urban, political, and scholarly spaces of the period. The narrative also includes journeys beyond the city.
Damascus is the principal setting of the first Assassin's Creed, while Alexandria is central to Assassin's Creed Origins. Córdoba is associated with historical settings and references elsewhere in the franchise, but it is not Mirage's main city.