<Tr> <Th> Mode (s) </Th> <Td> Single - player, multiplayer </Td> </Tr> <P> Assassin's Creed: Revelations is a 2011 action - adventure video game developed by Ubisoft Montreal and published by Ubisoft . It is the fourth major installment in the Assassin's Creed series, a direct sequel to 2010's Assassin's Creed: Brotherhood, and the third and final chapter in the' Ezio trilogy' . The game was released on PlayStation 3, Xbox 360, and Microsoft Windows in November and December 2011 . </P> <P> The plot is set in a fictional history of real world events and follows the centuries - old struggle between the Assassins, who fight for peace with free will, and the Templars, who desire peace through control . The framing story is set in the 21st century and features the series protagonist Desmond Miles who, with the aid of a machine known as the Animus, relives the memories of his ancestors to find a way to avert the 2012 apocalypse . Revelations features two other returning protagonists: Altaïr Ibn - La'Ahad in 12th and 13th century Masyaf, and Ezio Auditore da Firenze in 16th century Constantinople . The main story follows the Assassin Ezio's journey to unlock the secret of Altaïr's vault in Masyaf using disc - like artifacts containing Altaïr's memories . </P> <P> Assassin's Creed: Revelations is set in an open world and presented from the third - person perspective with a primary focus on using Ezio's, Desmond's, and Altaïr's combat and stealth abilities to eliminate targets and explore the environment . One of the protagonists (Ezio) is free to explore the Assassin Base in the city of Constantinople and the city itself to complete side missions away from the primary storyline . </P>

When does assassin's creed revelations take place
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