Millon-seller titles of Nintendo products

DS

Pokemon Black Version/White Version – 4.07 million
Pokemon Heart Gold Version/SoulSilver Version – 10.93 million
New Super Mario Bros. – 24.13 million

Wii

Super Mario Galaxy 2 – 5.10 million
Wii Sports Resort – 20.94 million
Wii Sports – 67.71 million
Wii Fit Plus – 15.22 million
Wii Party 2.50 million
New Super Mario Bros. Wii – 16.73 million
Mario Kart Wii – 24.01 million

Thanks to Thomas N for the tip!

Source