Spotted by IGN, an account on X called Ninjinaut showcased the Mirror Mode Easter egg in Free Roam for Mario Kart World. The video sees Baby Rosalina jumping into the window, which is a direct callback to Super Mario 64's mechanic for accessing new worlds.

Once you've mastered Mario Kart World's multitude of cup circuits, you may want a new challenge. Mirror mode literally flips maps to change the experience.

Here are all of the new characters arriving in Mario Kart World: While Chargin' Chuck, Hammer Bro, Monty Mole and Nabbit could all be considered new characters to the mainline Mario Kart franchise, it's important to note that they previously appeared in Mario Kart Tour for mobile devices.