Xbox LIVE Arcade

Xbox LIVE Arcade service and Xbox Originals (a selection of games first released on the original Xbox), but in 2009 the company will take this one step further. Starting with big hitters Halo 3, Gears of War and Forza 2, full Xbox 360 games will be released on Xbox LIVE Marketplace.

Epic Games' Gears of War 2

Epic Games' Gears of War 2 sits comfortably at the top of the charts with 1.56 million units sold. The Xbox 360 version of Call of Duty: World at War made it to second place while the third, fourth, and fifth spots were taken by first-party Nintendo titles. The only PS3 exclusive to crack the top ten was Resistance 2 with 385,000 units sold.
Gears of War 2 (Epic, Xbox 360) - 1.56 million units
Call of Duty: World at War (Treyarch, Xbox 360) - 1.41 million units
Wii Play (Nintendo, Wii) - 796,000 units
Wii Fit (Nintendo, Wii) - 697,000 units
Mario Kart Wii (Nintendo, Wii) - 637,000 units
Call of Duty: World at War (Treyarch, PS3) - 597,000 units
Guitar Hero World Tour (Vicarious Visions, Wii) - 475,000 units
Left 4 Dead (Valve, Xbox 360) - 410,000 units
Resistance 2 (Insomniac, PS3) - 385,000 units
Wii Music (Nintendo, Wii) - 297,000 units