Xbox is the predecessor to Microsoft's Xbox 360 console.
The promotional campaign for Xbox 360 began on March 14, 2005, with the opening of an alternate reality game called OurColony.
The Xbox 360 was released on November 22, 2005, in the United States and Canada; December 2, 2005, in Europe and December 10, 2005, in Japan.
While the first Xbox's graphics processing unit was produced by NVIDIA, the Xbox 360 uses a chip designed by ATI called Xenos.