Nintendo first party software - million sellers update

Switch

Zelda: Breath of the Wild - 2.76 million

Wii U

Mario Kart 8 - 8.31 million
New Super Mario Bros. U - 5.68 million
Super Mario 3D World - 5.60 million
Super Smash Bros. for Wii U - 5.20 million
Nintendo Land - 5.17 million
Splatoon - 4.80 million
Super Mario Maker - 3.95 million
New Super Luigi U - 2.95 million
The Legend of Zelda: The Wind Waker HD - 2.17 million
Mario Party 10 - 2.09 million
The Legend of Zelda: Breath of the Wild - 1.08 million

3DS

Pokémon X/Pokémon Y - 16.11 million
Pokémon Sun/Pokémon Moon - 15.44 million
Mario Kart 7 - 15.22 million
Pokémon Omega Ruby/ Pokémon Alpha Sapphire - 13.74 million
New Super Mario Bros. 2 - 11.27 million
SUPER MARIO 3D LAND - 11.27 million
Animal Crossing: New Leaf - 10.97 million
Super Smash Bros. for Nintendo 3DS - 8.72 million
Tomodachi Life - 5.70 million
Luigi's Mansion: Dark Moon - 5.31 million
Super Mario Maker for Nintendo 3DS - 2.34 million
Kirby: Planet Robobot - 1.36 million