The software is uniquely distributed as a free digital download from the Nintendo eShop. Because the software is already free, seeking an "NSP" (Nintendo Submission Package) file from unofficial sources is generally unnecessary and carries risks such as potential malware or account bans. Key Game Mechanics

Players can customize their track by adding obstacles, shortcuts, and other features. The game also includes a variety of pre-made tracks and courses, which can be used as inspiration for creating custom tracks. The track creation process is intuitive and fun, allowing players to get creative and experiment with different layouts and designs.

However, the software without the physical Mario or Luigi RC Kart kit. The game uses the kart's built-in camera to stream a live view of your home to your Nintendo Switch or TV. How to Set Up and Play

Accessing the software if the eShop isn't available in their territory.

Unlike traditional Mario Kart games, your journey starts with a physical box containing a real-life RC kart (either ) and four cardboard gates. The Connection:

The Switch’s camera reads the kart’s position via AR markers on the gates, allowing you to race against ghosts, item boxes, and even a second player with another kart.