I'll take it one step further.
Splatoon 2 will reach around 14-15 million - Pokemon levels.
Super Mario Odyssey will be around 12 million.
Breath of the Wild, it will take some time, but I do believe it will crack that 10 million mark and perhaps even go for 11.
Other games that I think will get there are Pokemon (effortlessly), Animal Crossing Switch, and maybe even Mario Kart 8 Deluxe.
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