Mario Kart Tour is a multiplayer racing game that allows players to challenge others from around the world. Up to eight players can compete in races, with customizable rules such as individual or team races, kart speed, and number of item slots. The game offers a world tour experience, featuring courses inspired by real-world cities as well as classic Mario Kart tracks. These destinations will be featured in tours that rotate every two weeks, and some characters will have variations that incorporate the local flavor of the cities.

The game offers a simplified control system, allowing players to steer and drift with just one finger. Players can also use a variety of powerful items to gain an advantage on the racetrack. The new Frenzy mode provides an unlimited supply of a certain item and makes the player invincible for a short time. By earning Grand Stars through racing or using the featured pipe, players can collect drivers, karts, and gliders. Completing challenges also allows players to earn badges to display next to their in-game name.

In addition to traditional races, Mario Kart Tour features bonus challenge courses that require a different approach to gameplay and strategy. These courses, with names like "Vs. Mega Bowser" and "Goomba Takedown," add a twist to the racing experience. Players can also compete online to increase their rank and compare their high scores with players from all over the world. By practicing and experimenting with different combinations of drivers, karts, and gliders, players can improve their scores and aim for the top spot.