Currently, Mario Kart World is selling faster than Mario Kart 8 Deluxe. It has sold 9.57 million units so far. During the same period, Mario Kart 8 Deluxe sold 9.22 million units.

We'll see how strong Mario Kart World's sales continue, because achieving MK8 Deluxe lifetime sales is something that probably won't happen, but I think that's already impressive. Mario Kart is still powerhouse in sales.