RETRO MARIO KART FACT OF THE DAY: Within the first week of sales, Mario Kart Wii was the top best seller out of all the Mario Kart games in the franchise, gaining an outstanding amount of 36.75 Million copies total that where sold across the nation. And yes, sadly, it even surpassed the sales of the recent release of Mario Kart 8 which had only a total of 7.70 Million copies sold up to this day.