First-person-shooter Call of Duty 4 was last year's biggest selling game, according to sales figures.
Call of Duty 4 has won many awards since its launch
It has sold more than seven million units since its launch in November, says its publisher Activision.
The claim is based on sales figures from research firms The NPD Group, Chart Track and The GFK Group.
The game was just one of a raft of high profile releases in 2007 including the third instalment of the Halo series for the Xbox 360.
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.
However, Microsoft recently announced that Call of Duty 4: Modern Warfare had overtaken Halo 3 for the first time as the most popular game on Xbox Live, based on unique users.
And despite being released six weeks after Halo 3 it has also sold more units.
"We're very excited about this achievement especially given so many competitive titles this year," said Will Kassoy, of the game's publisher Activision.
Call of Duty 4 was developed by Infinity Ward and is available for PC, PlayStation 3 and the Xbox 360.
It follows the story of a American and British Special Forces in Russia and the Middle East and won "Best Action game" at the video game industry's leading event, E3.
It also won the Spike TV awards for "Best Shooter" and "Best Military Game".
However, the title narrowly missed a perfect 10 out of 10 score in computer game's magazine Edge.
Halo 3, The Orange Box and Super Mario Galaxy all achieved a perfect score.