Video game Halo 3 earned more than £84m ($170m) in sales in its first 24 hours on release, according to Microsoft.
The game sets the record for the most money earned in a day by an entertainment product, topping figures set by film Spiderman 3.
Thousands of shops opened at midnight on Monday in the United States as gamers queued for the Xbox 360 title.
But reports of scratched discs have marred the launch, with Microsoft offering to replace them for free.
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