While there isn't a widely recognized official game titled exactly on the Nintendo Switch eShop, the "io" genre is incredibly popular on the platform. These games are known for their "easy to learn, hard to master" competitive multiplayer loops.
It’s the most direct translation of the "io" web-game aesthetic to the Switch. Brawl.io Switch NSP (eShop)
In this physics-based brawler, you control a black hole moving through a city. You consume objects—and other players—to grow larger. While there isn't a widely recognized official game