Mario Kart World sold 782,566 physical copies in Japan during its first four days.
The figure was reported by Famitsu for the opening sales period of June 2–8, 2025, which covered the game’s launch window in Japan. It refers to physical copies, not a worldwide total and not the number of Nintendo Switch 2 consoles sold.
That distinction matters because later figures describe different measurements. Mario Kart World had sold 1,655,926 physical copies in Japan by August 31, 2025, while a separate United States estimate included both physical sales and copies bundled with the console.
The first-four-days number is therefore a precise early Japanese retail figure. It should not be confused with the game’s global sales totals, eShop rankings, or bundled-unit estimates.