Which Assassin's Creed game is set mainly in Baghdad during the ninth century?

Assassin's Creed Mirage is set mainly in Baghdad during the ninth century.

The game follows Basim Ibn Ishaq before he becomes the character seen in Assassin's Creed Valhalla. Set during the Islamic Golden Age, Mirage centers on Baghdad and its surrounding wilderness, presenting Basim's growth from street thief to Hidden One under the guidance of Roshan.

Mirage was released in 2023 and was designed as a more focused, linear experience than several of the large role-playing entries that preceded it. Its gameplay emphasizes investigation, social stealth, parkour, and targeted assassinations, echoing the structure of earlier Assassin's Creed titles.

The historical Baghdad depicted in the game was the capital of the Abbasid Caliphate and a major center of learning, commerce, and political power. Mirage is connected to Valhalla through Basim, but its ninth-century Iraqi setting and earlier point in his life make it a distinct story.