Nintendo Switch Online is a paid service that gives members access to online play in compatible games, a selection of NES™ games, extra features for the Nintendo Switch Online smartphone app, and more.

Online Play

Battle it out or cooperate with players around the world in compatible games like Splatoon™ 2, ARMS™, Mario Kart™ 8 Deluxe, Mario Tennis™ Aces, and Sushi Striker™: The Way of Sushido.

Save Data Cloud Backup

Save your data online for easy access. Details about this feature will be available before the paid service launches in September.

https://www.nintendo.com/switch/online-service/