'Halo 3' Sells 1 Million Copies Before Release

Microsoft said Thursday that "Halo 3" has become the fastest selling pre-ordered game in history, with over 1 million copies already paid for by customers. Microsoft hopes to further that number by launching a number of Halo ad campaigns with Mountain Dew, 7-Eleven, Pontiac, Comcast and Burger King.

"Halo 3" officially goes on sale September 25, and retailers expect to be fully sold out by the time the game arrives at stores. Microsoft says this is the first time a game has created as much buzz as a blockbuster movie, and Mountain Dew is even creating a new drink -- called "Game Fuel" -- that is Halo-themed. The game will also be featured in television commercials from Pepsi and Pontiac.