2,211,000 Wii Sports (Nintendo) (12/2/06) - rounded off through Nov 18/07 (MC)
1,689,000 Hajimete no Wii (Wii Play) (Nintendo) (12/2/06) - rounded off through Sept 9/07 (MC)
889,584 Mario Party 8 (Nintendo) (7/26/07) - through Nov 18/07
534,921 Zelda no Densetsu: Twilight Princess (The Legend of Zelda: Twilight Princess) (Nintendo) (12/2/06) - through Sept 30/07
508,065 Odoru Made in Wario (WarioWare: Smooth Moves) (Nintendo) (12/2/06) - through Sept 30/07
470,820 Super Paper Mario (Nintendo) (4/19/07) - through Aug 5/07
470,698 Dragon Quest Sword: Kamen no Joou to Kagami no Tou (Dragon Quest Swords: The Masked Queen and the Tower of Mirrors) (Square Enix) (7/12/07 ) - through Oct 7/07
378,007 Super Mario Galaxy (Nintendo) (11/1/07) - through Nov 18/07
278,652 Pokemon Battle Revolution (Nintendo) (12/14/06) - through July 1/07
211,280 Wii de Yawaraka Atama Juku (Big Brain Academy: Wii Degree) (Nintendo) (4/26/07) - through Aug 5/07
157,784 Dragon Ball Z: Sparking! Neo (Dragon Ball Z: Budokai Tenkaichi 2) (Bandai) (1/1/07) - through July 1/07
153,397 Fire Emblem: Akatsuki no Megami (Fire Emblem: Radiant Dawn) (Nintendo) (2/22/07) - through July 1/07
105,441 BioHazard 4 Wii Edition (Resident Evil 4 Wii Edition) (Capcom) (5/31/07) - through Aug 5/07
104,960 Biohazard Umbrella Chronicles (Resident Evil: The Umbrella Chronicles) (Capcom) (11/15/07) - through Nov 18/07
104,524 Ennichi no Tatsujin (Namco) (12/2/06) - through July 1/07

If graphs are your thing. You can check out the link below. 

Link