IGN has released a detailed GamerMetrics report specifically focused on Halo 3. GamerMetrics analyst Nick Williams predicts that Halo 3 will sell more than 4 million units in the US alone within the first two months of launch, and that Halo 3's sales in five weeks will "almost double" the total sales of Gears of War, which holds the current record as the fastest-selling video game title. Williams says Halo 3 will "more than likely" break into the top ten best-selling video games of all time.
Williams also expects Halo 3 to drive "significant" Xbox 360 sales during the holiday season and to have a long-lasting impact beyond the launch weekend because of the game's addictive multiplayer features. "Microsoft finds itself in the position of serving arch-rival Sony a devastating blow as it looks to build its lead in the next-gen console wars," said Williams.