Currently Online 
S.Peelman on 30 January 2015
Zelda U: 987k
Xenoblade X: 324k
Star Fox: 198k
Splatoon: 203k
Yoshi's Wooly World: 145k
Yoshi will probably get the smallest opening, because it won't be front-loaded, but definitely won't end up with the lowest lifetime, maybe even second after Zelda. Splatoon is the wildcard. Zelda will win both first week and lifetime with ease obviously.
