Top 10 best December sales.
Wii - 3,810,000 (2009)
DS - 3,310,000 (2009)
DS - 3,040,000 (2008)
PS2 - 2,733,000 (2002)
DS - 2,500,000 (2010)
DS - 2,470,000 (2007)
Wii - 2,360,000 (2010)
GBA - 2,316,000 (2003)
GBA - 2,215,000 (2002)
Wii - 2,150,000 (2008)
NES may have had comparable figure in 1988 when it sold 9m in the USA with 90% market share.