Assassin's Creed is an action-adventure game developed by Ubisoft Montreal and published by Ubisoft. It is the first installment in the Assassin's Creed series. The video game was released for PlayStation 3 and Xbox 360 in November 2007. A Microsoft Windows version titled Assassin's Creed: Director's Cut Edition containing additional content was released in April 2008.

Ubisoft Divertissements Inc., doing business as Ubisoft Montreal, is a Canadian video game developer and a studio of Ubisoft based in Montreal.