What is the title of the first Assassin's Creed game to feature Basim Ibn Ishaq as its protagonist?

Assassin's Creed Mirage is the first Assassin's Creed game to feature Basim Ibn Ishaq as its protagonist.

Mirage tells Basim's earlier story in ninth-century Baghdad, before the events of Assassin's Creed Valhalla. Basim begins as a street thief in Anbar and joins the Hidden Ones, eventually developing into a skilled Assassin. The game focuses on his training, investigations, and relationship with his mentor Roshan.

Baghdad is the principal setting, and the city is divided into districts including Harbiyah, Abbasiyah, Karkh, and the Round City. The setting places the story during the Islamic Golden Age under the Abbasid Caliphate.

Basim first appeared as an important character in Valhalla, but Mirage is his first starring role. That chronology can cause confusion: Valhalla was released earlier, while Mirage depicts an earlier period of Basim's life.