The promotional campaign for Xbox 360 began on March 14, 2005, with the opening of an alternate reality game called OurColony.
Backward compatibility is achieved through software emulation of the original Xbox.
The console features 512 MB of 700 megahertz GDDR3 RAM on a 128-bit bus.
Up to four controllers are supported by the Xbox 360, in the wireless form. However, there is a maximum of three wired controllers, as the Xbox 360 only has 3 USB slots.
The Xbox 360 controller is significantly different from the original Xbox controllers, the Duke and the S models. The black and white buttons have been replaced by bumper buttons, which are on the shoulder of the controller, right before the triggers. It is noticeably smoother, has a white-gray theme, and is very small and ergonomically built.