Which Assassin's Creed game is set mainly in Constantinople?

Assassin's Creed Revelations is the Assassin's Creed game set mainly in Constantinople.

Released in 2011, Revelations follows Ezio Auditore as he travels to Constantinople in the early 16th century. The city is the central open-world setting, and the story explores Ezio's search for keys connected to Altaïr's legacy and the secrets beneath Masyaf.

The game also includes playable sequences featuring Altaïr and modern-day sections involving Desmond. Constantinople, now generally called Istanbul, was the capital of the Byzantine and Ottoman worlds at different points in history; the game uses the city's historical name for its 1511 setting.

Brotherhood is primarily set in Rome, while Rogue moves among North Atlantic and colonial locations. Mirage is centered on ninth-century Baghdad, making it a different Middle Eastern setting despite the broader series connection.