What was Constantinople called in Assassin's Creed Revelations?

Constantinople is the principal city setting of Assassin's Creed Revelations.

The game follows Ezio Auditore in the early sixteenth century as he travels to Constantinople, the capital of the Byzantine Empire, to search for keys connected to Altaïr's legacy. The city is divided into districts associated with communities including the Ottoman Turks, Greeks, and Romani.

The historical city was known as Constantinople during the period portrayed by the game. It was captured by the Ottoman Empire in 1453 and became the Ottoman capital. The name Istanbul became dominant later, particularly during the modern Turkish period, so using Istanbul as the game's period name can create a historical mismatch.

Revelations was released in 2011 and concludes Ezio's main trilogy. It also returns to Altaïr through playable memory sequences, linking the two protagonists more directly than earlier entries.