In Assassin's Creed Mirage, Anbar is Basim's home before he travels to Baghdad.
Basim Ibn Ishaq begins Mirage as a young thief living in Anbar, a settlement associated with the historical region west of Baghdad. After a vision and a dangerous encounter, he leaves with Roshan and begins training with the Hidden Ones. This journey establishes the game's transition from Basim's street life to his career as an Assassin.
Baghdad becomes the principal setting after Basim arrives there. The distinction matters because many players remember Baghdad as the game's starting place, even though the opening chapters occur in Anbar and introduce Basim's relationships with Nehal and Dervis.
Mirage is set in ninth-century Iraq during the Abbasid Caliphate, especially around 861 CE. Its fictional narrative uses historical Baghdad, political tensions, and the Hidden Ones, while Basim's story also connects directly to the mythology established in Assassin's Creed Valhalla.