Activision's Call Of Duty series occupies the top three slots in Microsoft's chart of last year's most played games on Xbox Live.
Black Ops was the most played game of the year, ahead of Modern Warfare 3, which is in second spot despite only launching on November 8. Modern Warfare 2, released in 2009, is in third.
It doesn't stop there, either, with Call Of Duty 4 in 14th and World At War at number 20, meaning the series takes up a quarter of the top 20.
Pinball FX2 was the top Xbox Live Arcade game of the year, ahead of Full House Poker and Castle Crashers. For the full list, follow the source link below.
Source: Major Nelson