Which studio developed the first Assassin's Creed game?

Ubisoft Montreal developed the first Assassin's Creed game. The Canadian studio created the original title for Ubisoft, with support from other Ubisoft teams during production.

Ubisoft Montreal had previously worked on major entries in the Prince of Persia series. Assassin's Creed grew from that experience but became a distinct franchise built around historical settings, stealth, freerunning, and the conflict between Assassins and Templars.

The original game launched in 2007 and introduced Altaïr Ibn-La'Ahad, Desmond Miles, and the Animus framework. Its success established a long-running series with games developed by several Ubisoft studios.

Ubisoft Quebec later led development of Assassin's Creed Odyssey and Syndicate, while Ubisoft Sofia worked on titles including Liberation. Those studios are part of the broader franchise history, but Ubisoft Montreal is the specific developer of the first game.