Nintendo has given some new details on its long-in-gestation online service for the Switch. The service, officially called Nintendo Switch Online, will go live this September costing $3.99 a month, with the price for three months set at $7.99 and one year for $19.99. There's also a $34.99 option for a family plan that works across up to eight accounts.

The service lets you play games like Splatoon 2, Arms, and Mario Kart 8 Deluxe online, which has previously been free. Features like voice chat will continue to be offered through a smartphone app. Nintendo has confirmed that cloud backup for save data will also form part of the service, a long-requested feature for Nintendo consoles.

Other than maintaining the ability to play existing games online, the biggest reason to sign up for the service will be the library of NES games that Nintendo is adapting to the Switch complete with online compatibility and voice chat. There'll be 20 games at launch, with the following 10 confirmed:

• Balloon Fight
• Donkey Kong
• Dr. Mario
• Ice Climber
• The Legend of Zelda
• Mario Bros.
• Soccer
• Super Mario Bros.
• Super Mario Bros. 3
• Tennis

To go along with this, Nintendo told Kotaku that it won’t be offering a traditional virtual console section of its digital shop, as it did with past consoles like the Wii and Wii U. “There are currently no plans to bring classic games together under the virtual vonsole banner as has been done on other Nintendo systems,” a company spokesperson said. As for the subscription service, Nintendo says new titles will be added to the service regularly, though it looks like it'll be limited to the NES initially. It's not quite the Netflix-for-Nintendo subscription package we've been waiting for, then, but it's a start.

Update, May 8th, 9:00AM: Added additional information from Nintendo with regards to the virtual console on the Switch.