Xbox is the predecessor to Microsoft's Xbox 360 console.
The Xbox 360 is the successor to Microsoft's Xbox video game console, developed in cooperation with IBM, ATI, Samsung and SiS.
The Xbox 360 sold out completely at release and by the end of September 2006 had sold 6 million worldwide.
The promotional campaign for Xbox 360 began on March 14, 2005, with the opening of an alternate reality game called OurColony.
At launch, the Xbox 360 was priced at US$399 and the Core System was priced at US$299.
Microsoft is predicting that with the Xbox 360, a greater market share, yearly revenue through their Xbox Live service, and falling hardware costs will eventually make system sales profitable.
With the launch of the Xbox 360, Microsoft's online gaming service, Xbox Live went through a major upgrade, adding a basic non-subscription service, Silver, to its already established premium subscription-based service, Gold.
The console's graphical user interface is the Xbox 360 Dashboard; a tabbed interface that features four "Blades".
Backward compatibility is achieved through software emulation of the original Xbox.
Updated emulation profiles can be obtained through Xbox Live, by burning a CD with profiles downloaded from Xbox.com, or by ordering an update disc from Microsoft.