Latest Articles for Wii Play
Guitar Hero III, GTA San Andreas and Modern Warfare 2 have also sold lots.
Over seven million Nintendo hardware units sold in December.
New Super Mario Bros. Wii shifts 2.82 million copies.
Call of Duty: Modern Warfare 2 fends off strong competition from Nintendo.
Predecessor has topped 50 million worldwide.
Followed by Wii Play, Mario Kart Wii, Prof. Layton and Killzone 2.