Microsoft has announced that "Halo 3" has officially become the biggest entertainment launch in history, garnering an estimated $170 million in sales in the United States alone in the first 24 hours.

The Xbox 360 title beat previous records set by blockbuster theatrical releases like "Spider-Man 3" and novels such as "Harry Potter and the Deathly Hallows".

More than 1.7 million copies of "Halo 3" were preordered in the US before a single store opened its doors at midnight, on September 25, making this the fasting pre-selling game in history, surpassing the previous record-setting pre-sales of "Halo 2".