The first Assassin's Creed game debuted in 2007.
Ubisoft released Assassin's Creed in November 2007 for PlayStation 3 and Xbox 360, with a Windows version following in 2008. The game introduced players to Altaïr Ibn-La'Ahad, a member of the Assassin Brotherhood operating during the Third Crusade.
The title was developed primarily by Ubisoft Montreal and grew from ideas connected to the Prince of Persia series. Its open-world structure, rooftop movement, social stealth, historical settings, and fictionalized conflict between Assassins and Templars established the series' core identity.
A common mix-up is confusing the original game's release year with the year of its Windows launch or with Assassin's Creed II, which arrived in 2009. The 2007 release is the beginning of the main Assassin's Creed video-game series, although later stories expanded its timeline in both historical directions.