Prince of Persia is an action-adventure and platforming video game developed by Ubisoft Montreal and published by Ubisoft. It is the seventh main installment in the Prince of Persia franchise, and the second reboot, establishing a new continuity that is separate from other games in the series. It was released in the United States on December 2, 2008, for PlayStation 3 and Xbox 360, and on December 9 for Windows. It was released on March 24, 2009, for Mac OS X via the Cider engine. The game was also released on November 11, 2008, by Gameloft for mobile phones that runs on the Java platform taking place in a 2D environment, and has a feature of enabling the players to control a second character at certain points of levels. The game is set in ancient Persia, and follows an unnamed player-character, who finds himself in a mysterious land after a large sandstorm diverted him from his course. Here, he meets a princess named Elika, and must work with her to re-imprison the evil entity Ahriman, who has corrupted the land after being released by Elika's father. Throughout the journey, players traverse many different environments using his acrobatic abilities to scale walls and even crawl on the ceilings, and combat various enemies. The game's storyline and setting borrowed some aspects from Zoroastrianism. Prince of Persia received generally positive from critics, and has sold over 2.5 million copies as of November 2009. An expansion pack that serves as an epilogue to the story was released in March 2009. The only other game in the series set in this continuity is Prince of Persia: The Fallen King, also released in December 2008 for the Nintendo DS.