Nintendo Entertainment System - Nintendo Switch Online

Nintendo Entertainment System - Nintendo Switch Online (known as Family Computer - Nintendo Switch Online in Japan and Hong Kong) is an application for the Nintendo Switch system. It features a library of Nintendo Entertainment System games, with some supporting online multiplayer, and some games having "special" versions, with players given advantages and/or skipped ahead to later levels. It was released at the launch of the Nintendo Switch Online service in North America on September 18, 2018 and in Japan, Europe and Australia on September 19, and will release in Hong Kong and South Korea on April 23, 2019.

The application is exclusive to active subscribers of Nintendo Switch Online; users can access these games as long as they have an active subscription, and must contact online at least once a week to continue to access them offline.

List of Mario games
The following Mario games are available on Nintendo Entertainment System - Nintendo Switch Online in all regions.

Available at launch

 * Donkey Kong
 * Dr. Mario
 * Mario Bros.
 * Super Mario Bros.
 * Super Mario Bros. 3
 * Yoshi

Available from October 10, 2018

 * NES Open Tournament Golf

Available from December 12, 2018

 * Wario's Woods
 * Dr. Mario (Special; skips to level 20 on high speed)

Available from February 13, 2019

 * Super Mario Bros. 2

Available from April 10, 2019

 * Super Mario Bros.: The Lost Levels