Mario Kart 8 is now reportedly the second best-selling racing game of all time across the US, and everyone's favourite red hat-wearing, moustachioed plumber has only been beaten to pole position by his older self.

The game has boosted and drifted its way to some seriously impressive levels of success, now just one place behind the incredibly popular Mario Kart Wii. Catching up to that game will take some doing - the Wii's install base was a different beast entirely back in the day - but it's certainly off to a speedy start. It's worth noting that sales for both the original Wii U game and the Deluxe edition on Switch are included in this figure, and that the games are ranked in dollar sales.

The news comes from the NPD Group's Mat Piscatella, who has already shared some incredibly interesting info earlier today. We've learnt that Switch was the best-selling console throughout 2018 in the US, Super Smash Bros. Ultimate was the highest-earning Switch game of the year - despite only launching in December - and that Pokémon still dominates the 3DS charts to this day.

We're certain Mario Kart 8 Deluxe will continue to sell by the bucketload, but it'll be interesting to see where the franchise goes from here.

Does the Switch need a Mario Kart 9? Or will 8 Deluxe be more than enough to see the Switch through? Share your thoughts with us in the comments.