I think the Switch will have the best selling versions of a lot of Nintendo games

[PAOerfulone]

I think that Breath of the Wild and Splatoon 2 are no doubters.
Animal Crossing Switch is another that I think has a chance.
Super Mario Odyssey is another. At this moment the best selling 3D Mario game is Galaxy, which is somewhere around the 12-13 million mark. It's going  to be tough for Odyssey to top that, but it's doable..
Xenoblade 2, I'm crossing my dingers for, the mark isn't that high to begin with amd it has a succeasful system that is at the beginning of it's life on it's side.
I think it's exposure and time on mobile will help the Fire Emblem IP substantially along with the jump to HD. So that's another that I think will do it.

Another that has potential, arguably the most out of all, is Metroid Prime 4. A Metroid Prime game in portable HD is something that will definitely draw interest. But it needs two things to help Samus reach heights she has never seen before. 1) A mobile spin off title to promote the game. 2) A great online muliplayer mode. I mean just look at Call of Duty, Battlefield, Star Wars Battlefront, Destiny, and almost every FPS game on the market that sells extremely well, they all have one thing in common, great online multiplayer. Metroid has never gotten that chance because the GameCube didn't have online and the Wii's online was atrocious. Obviously the single player, Metroid Prime experience comes first above all else, but that's not enough in my opinion. It needs more.