Nintendo expects to sell another half a million units in the January to March quarter.
Disney and Activision both claim 2014's best-selling toys-to-life franchise.
FIFA 15 wins out as Alien Isolation and Dragon Age Inquisition fail to crack top 30.
The special edition handheld sold out at US retailer GameStop in just 15 minutes.
Line-up includes new models of Mario, Luigi, Peach, Yoshi and Bowser, plus the introduction of Toad.
Only one month to wait for the revamped classic.