Which Ubisoft studio was the lead developer of Assassin's Creed II?

Ubisoft Montreal was the lead developer of Assassin's Creed II.

The Montreal studio developed the sequel after creating the original Assassin's Creed. Released in 2009, Assassin's Creed II replaced the first game's single-city structure with a broader Renaissance Italy setting and followed Ezio Auditore as he became an Assassin.

Ubisoft Montreal worked with several other Ubisoft studios, so the game is not solely the product of one location. Supporting teams contributed to technology, art, animation, and other production areas. This collaborative structure can make studio credits easy to confuse.

Ubisoft Quebec later became lead developer of Assassin's Creed Syndicate and Assassin's Creed Odyssey, while Ubisoft Singapore became especially associated with naval technology and support work. Ubisoft Toronto was founded after Assassin's Creed II and was not its lead developer.