After the massive success of Halo 3 last year, , where the game sold millions and took the top spot as the most played game on Xbox Live. Everyone expected Halo 3 to stay at the top for a long time, but it has now been beaten by another of 2007 big hitters, Call of Duty 4. The game has knocked off Halo 3 from the top spot as the most played game on Xbox Live, a place Halo 3 had since late September. Guitar Hero 3 takes the third place, while Gears of War is still present at the top, ranking at fourth. Full rankings here.

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