December NPD

Hardware Results

-Wii: 3.81M2.11M (+202%)

-DS: 3.31M2.05M (+95%)

-PS3: 1.36M650K (+92%)

-360: 1.31M490K (+60%)

-PSP: 655K361K (+123%)

-PS2: 333K130K (+64%)

Software Results

1. New Super Mario Bros. Wii - Wii - Nintendo - 2.82M
2. Wii Fit Plus - Wii - Nintendo - 2.41M
3. Wii Sports Resort - Wii - Nintendo - 1.79M
4. Call of Duty: Modern Warfare 2 - Xbox 360 - Activision - 1.63M
   
5. Call of Duty: Modern Warfare 2 - PS3 - Activision - 1.12M
   
6. Wii Play w/remote - Wii - Nintendo - 1.01M
7. Mario Kart w/ Wheel - Wii - Nintendo - 936.1K
8. Assassin's Creed II - Xbox 360 - Ubisoft - 783.1K
9. Left 4 Dead 2 - Xbox 360 - Valve - 728.5K
   
10. Mario & Luigi: Bowser's Inside Story - DS - Nintendo -656.7K

Source