Have you already mastered Mario Kart World's new brand of racing? Have you practiced every wallride and time skip in the game? Maybe it's time to try something new and take on the Mirror Mode challenge.

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.