Smash Ultimate should pass 20 million lifetime.
BOTW may or may not, but the mere fact we're discussing the possibility of a Zelda game topping 20 million is insane.
Just from the games we know of so far, Splatoon 2, Mario Maker 2, Sword/Shield, and Animal Crossing will all pass 10 million, adding to the five games already in the 8-figures club. Heck, even Super Mario Party could get there in the long run.
Currently the record for the most 10-million-plus sellers on a Nintendo system is a tie between the Wii and DS at 10 games each. Switch looks almost certain to bust that record.








