https://www.polygon.com/2018/10/5/17942876/super-mario-party-minigames-online-play-nintendo-switch

There’s online multiplayer in Super Mario Party, a franchise first. But we wouldn’t blame you for skipping over the mode entirely. Instead of having a wide array of the game’s entertaining minigames available, Super Mario Party’s online mode has less than a dozen total — and on a rotating basis.

The Online Mariothon mode is a free-for-all competition for players worldwide, where players must focus on racking up the most points to place on the leaderboards. Unlike most marathons, this one is more of a sprint; groups of four only get to play five minigames together. These are culled from a list of just 10 different games.