"Assassin's Creed is a third person action-adventure video game developed by Ubisoft Montreal and published by Ubisoft. It was released worldwide in November 2007 on the PlayStation 3 and Xbox 360, and April 2008 for PCs.
Details emerge of a struggle between two factions, the Knights Templar and the Assassins, over an artifact known as a "Piece of Eden" and the game primarily takes place during the Third Crusade in the Holy Land in 1191. The game received generally positive reviews, and won several awards at E3 in 2006. A sequel, Assassin's Creed II, was released in November 2009."
Source: Wikipedia, "Assassin's_Creed," available under the CC-BY-SA License.