Mortal Kombat: Deception is a fighting game developed and published by Midway as the sixth installment for the Mortal Kombat (MK) series. It was released for the PlayStation 2 and Xbox in October 2004, while a Nintendo GameCube version was published in March 2005. Mortal Kombat: Deception follows the storyline from the fifth installment, Deadly Alliance. The story centers on the revival of the Dragon King Onaga, who attempts to conquer the realms featured in the series after defeating the sorcerers Quan Chi and Shang Tsung, the main antagonists in the previous game, and the Thunder God Raiden, defender from Earthrealm. As such, the surviving warriors from the previous titles join forces to confront Onaga.