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

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

The 2011 game follows Ezio Auditore as he travels to the Ottoman capital in search of Altaïr Ibn-La'Ahad's lost knowledge. The historical setting is Constantinople in the early sixteenth century, during the reign of Sultan Bayezid II and the rise of his sons Selim and Ahmet.

The city is divided into districts associated with different communities and landmarks, including Galata, the Imperial District, and the northern areas across the Golden Horn. The game also features Cappadocia as a separate location.

A naming detail can cause confusion: the city was known as Constantinople in the period depicted, while Istanbul became the standard official name later. Revelations is also the final main series game centered on Ezio and the conclusion of his personal arc, while Altaïr's earlier life is shown through playable memory sequences.