According to a list drafted up by VG247, Wii Play is the highest selling game so far this decade (starting from January 2000). The top 10 looks like this:
Wii Play with Remote (2006) / Wii / 11.1 millionGuitar Hero 3 (2007) / PS2, PS3, Wii, Xbox 360 / 10.3 millionGrand Theft Auto: San Andreas (2004) / PS2, Xbox/ 9.8 millionCall of Duty 4: Modern Warfare (2007) / DS, PS3, Xbox 360 / 8.5 millionWii Fit with Balance Board (2008) / Wii / 7.9 millionMadden NFL 07 (2006) / GC, GBA, PSP, PS2, PS3, Wii, Xbox, Xbox 360Grand Theft Auto: Vice City (2002) / PS2, XboxMadden NFL 08 (2007) / GC, PSP, PS2, PS3, Wii, Xbox, Xbox 360Call of Duty: World at War (2008) / DS, PS3, Xbox 360, WiiHalo 2 (2004) / XboxNo doubt most of them are buying it for the bundled Wiimote, but a win is a win.
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