Mario Odyssey, Breath of the Wild, and Splatoon 2 will all pass 10 million

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Kristof81 said:
I'm not so sure about Splatoon as this is quite niche (at least so far) franchise.

Splatoon 1 sold almost as much as Smash Bros Wii U, and more than 85% of Mario 3D World. Are those niche games?