Interactive entertainment will never be the same, with the launch of one title that has changed the way the world thinks about video games. Halo 3 has captured the attention of consumers worldwide and has made history as one of the biggest entertainment launches of all time. Microsoft Corp. today announced that Halo 3 has officially become a global phenomenon, garnering more than $300 million in sales in the first week alone. The critically acclaimed Xbox 360 exclusive, which was released worldwide on Tuesday, Sept. 25, is the fastest-selling video game ever and already one of the most successful entertainment properties in history. Record week-one sales come on the heels of the previously announced $170 million in sales in the U.S. within the first 24 hours of the game's release, which marked not just the biggest video game launch, but the biggest entertainment launch in history. The Xbox 360 title beat previous U.S. sales records set by blockbuster openings for entertainment events such as the release of "Spider-Man 3" and "Harry Potter and the Deathly Hallows."