Nintendo also sold another 2.4 million copies of Wii Fit Plus and 1.79 million copies of Wii Sports Resort last month, securing the top three spots on NPD's list of December's bestselling games. Nintendo had six of the top ten bestselling games for the month, representing more than 9.62 million games sold across the Wii and DS platforms.

And that's just in the top ten.

The Xbox 360 had three of the top ten, with Modern Warfare 2 moving another 1.63 million, Assassin's Creed II (783.1K) and Left 4 Dead 2 (728.5K) also charting high. Modern Warfare 2 represented the PlayStation 3's only top ten showing, another million-plus copies sold.

Here's the tally, from 11/29/09 - 1/2/10, according to the NPD Group.

01. New Super Mario Bros. Wii (Wii) - 2,820,000
02. Wii Fit Plus (Wii) - 2,410,000
03. Wii Sports Resort (Wii) - 1,790,000
04. Call of Duty: Modern Warfare 2 (Xbox 360) - 1,630,000
05. Call of Duty: Modern Warfare 2 (PS3) - 1,120,000
06. Wii Play (Wii) - 1,010,000
07. Mario Kart Wii (Wii) - 936,1000
08. Assassin's Creed II (Xbox 360) - 783,1000
09. Left 4 Dead 2 (Xbox 360) - 728,500
10. Mario & Luigi: Bowser's Inside Story (DS) - 656,700

There is much more after the break..

Nintendo's Wii Sports Resort was the bestselling video game in the U.S. last month, moving more than a half million copies—and Wii MotionPlus add-ons—with one exception. It was actually outsold by EA Sports NCAA Football 10.*

* Combined, that is. The PlayStation 3 and Xbox 360 versions of this year's NCAA Football joined forces to sell over 613,000 copies, besting Wii Sports Resort in multi-SKU semantics. Across all platforms, the NPD Group says, EA Sports' college footballer moved over 689,000 units. I smell sequel!

The line up is, like most months, Nintendo platform heavy. Seven of the top ten games are Wii or Nintendo DS titles, including plenty of evergreen entries like New Super Mario Bros. and Mario Kart Wii.
Complete numbers and hardware after the break..