How to Create a Nintendo Account, Support

Important The ability to use a Nintendo Network ID, Facebook, or Twitter to sign in to an existing Nintendo Account or to create a new Nintendo Account has been discontinued. We apologize for any inconvenience.

How to Create a Nintendo Account For Your Kids - Play Nintendo

How to Create a Nintendo Account and Link It to a Nintendo Switch

Contact Us, Contact, Support

Nintendo to end support for account logins via Facebook and Twitter starting 25 October

Transferring users and save data, Nintendo Switch Support

Friends, Nintendo Switch Support

How to Create a Nintendo Account For Your Kids - Play Nintendo

How to create and supervise your child's Nintendo Account

Nintendo Repairs, Contact, Support

Help with logging into warframe.com using Nintendo Switch account (details in comments) : r/Warframe