【Updated: 】
A Nintendo Account allows you to play Mario Kart Tour and access other Nintendo services.
Signing up for an account is free. https://accounts.nintendo.com
A Nintendo Account is required to start Mario Kart Tour. If you do not have a Nintendo Account, please follow the steps below to create one:
① After installing the app, tap ""Next"" on the Nintendo Account screen.
② Tap Create a Nintendo Account on the log-in screen.
③ Follow the on-screen instructions.