The promotional campaign for Xbox 360 began on March 14, 2005, with the opening of an alternate reality game called OurColony.
The Xbox 360 sold out completely at release and by the end of September 2006 had sold 6 million worldwide.
Due to its early launch, the Xbox 360 has a one-year lead on both of its competitors, Sony's PlayStation 3 and Nintendo's Wii.
The Xbox CPU also contains ROM storing Microsoft private encrypted keys, used to decrypt game data.
Microsoft has stated that they intend to release more emulation profiles as they become available, with a goal of making the entire Xbox library playable on the Xbox 360.
Xbox Live Gold has the same features as Silver, plus online game playing capabilities.
At launch, the Xbox 360 was priced at US$399 and the Core System was priced at US$299.
he Xbox 360 can connect to Xbox Live through an optional wireless network adapter on a home network through a wireless router.
Xbox is a sixth generation era video game console produced by Microsoft.
Since Microsoft owns the intellectual property rights to the hardware used in the Xbox 360, they can easily switch to new fabrication processes or change suppliers in the future to reduce costs.
