Nintendo have been crunching the numbers and updated their million sellers list and we have those updated numbers here:
3DS Million Sellers:
Pokémon X/Pokémon Y – 14.98 million pcs.
Mario Kart 7 – 13.56 million pcs.
Pokémon Omega Ruby/Pokémon Alpha Sapphire – 12.24 million pcs.
Super Mario 3D Land – 10.81 million pcs.
New Super Mario Bros. 2 – 10.39 million pcs.
Animal Crossing: New Leaf – 10.11 million pcs.
Super Smash Bros. for Nintendo 3DS – 8.23 million pcs.
Tomodachi Life – 5.09 million pcs.
Luigi’s Mansion: Dark Moon – 4.88 million pcs.
The Legend of Zelda: Ocarina of Time 3D – 4.30 million pcs.
Wii U Million Sellers:
Mario Kart 8 – 7.70 million pcs.
New Super Mario Bros. U – 5.34 million pcs.
Nintendo Land – 5.10 million pcs.
Super Mario 3D World – 5.01 million pcs.
Super Smash Bros. for Wii U – 4.90 million pcs.
Splatoon – 4.42 million pcs.
Super Mario Maker – 3.65 million pcs.
New Super Luigi U – 2.64 million pcs.
The Legend of Zelda: The Wind Waker HD – 1.82 million pcs.
Mario Party 10 – 1.81 million pcs.
Surprisingly, despite its popularity upon release, The Legend of Zelda: Twilight Princess HD has yet to break this list and secure a placement among the other Wii U titles in a list that is mostly Mario based, but there’s always next time.
Source: @NE_Brian of Nintendo Everything


Really impressed with Splatoon. It looks like Nintendo has a solid franchise for NX.