From Sweethacks:
"We all must have heard about Halo 1 or Halo 2, they where more or less the best selling games for the original Xbox console with millions of sales and new subscriptions to xbox live, infact there still are players on halo 2 online and the SweetHacks Clan is growing Everyday. We go by the name of SweetHacks Com
This will be the first Halo for the Xbox 360, and it comes at a critical point in the console wars, with Microsoft fighting both Sony's graphically superior PlayStation 3 and Nintendo's unexpected hit, the wrist-twisting Wii. Microsoft needs Halo 3 to be a system seller - a game so good that people buy an Xbox 360 just to play it (the original Xbox's only profitable quarter came during the launch of Halo 2."