Mortal Kombat (also known as Mortal Kombat 9) is a fighting video game developed by NetherRealm Studios and published by Warner Bros. Interactive Entertainment. The game is the ninth main installment in the Mortal Kombat series and a soft reboot of the franchise. The game was released for the PlayStation 3 and Xbox 360 systems in April 2011, and a PlayStation Vita port was released in May 2012. An expanded version of the game, titled Mortal Kombat: Komplete Edition, was released for Xbox 360 and PlayStation 3 in February 2012 and for Microsoft Windows in July 2013. Although beginning during the events of Mortal Kombat: Armageddon, the plot is a retcon to the earliest period in the Mortal Kombat series: the events of Mortal Kombat, Mortal Kombat II and Mortal Kombat 3 (as well as the latter title's two updates, Ultimate Mortal Kombat 3 and Mortal Kombat Trilogy). The storyline involves the divine protector of Earth, Raiden, attempting to change the aftermath of the events of Armageddon by contacting his past self as he faces defeat at the hands of the evil emperor of Outworld, Shao Kahn. While having characters and levels rendered in three-dimensions, the gameplay distances itself from the fully 3D graphics style seen in the last four games, bearing closer resemblance to that of the 2D era of the series, using a camera that is perpendicular to the two-dimensional playing field. Colloquially this is called 2.5D.