Epic's Gears of War 2 won the best-selling software crown in the United States last month, selling 1.56 million copies, according to the NPD Group. But Call of Duty: World at War won the multi-SKU battle.
World at War's tally rang up just shy of the 2.01 million that Call of Duty 4: Modern Warfare boasted in November of 2007, with Activision's WWII shooter moving 1.41 million on the Xbox 360 and 597,000 on the PlayStation 3. November's other big shooters, Left 4 Dead and Resistance 2, landed at spots eight and nine, respectively.
01. Gears of War 2 (Xbox 360) - 1.56 million
02. Call of Duty: World at War (Xbox 360) - 1.41 million
03. Wii Play (Wii) - 796,000
04. Wii Fit (Wii) - 697,000
05. Mario Kart Wii (Wii) - 637,000
06: Call of Duty: World at War (PS3) - 597,000
07. Guitar Hero World Tour (Wii) - 475,0000
08. Left 4 Dead (Xbox 360) - 410,000
09. Resistance 2 (PS3) - 385,000
10. Wii Music (Wii) - 297,000
NPD analyst Anita Frazier noted that Gears of War 2 enjoyed a 13% attach rate to the Xbox 360's install base, saying, "These are the types of platform exclusive games that are so important to the continued strength of any given platform."
[SOURCE]