Fun games for nintendo switch?

Go Vacation is fun.

1-2 Switch    

Sky Force Reloaded, Elli, Pankapu, Little Nightmares, Iconoclasts, Into the Dead 2, Mantis Burn.

Bravely Default 2 is coming out on the 26th, hopefully?

Got it pre-ordered, but hahaha who knows?

If you like turn based RPG games with an Isometric view.

Bravely Default 2, it's full price though, so like $60 but well worth it I HOPE?

If you have a 3/2ds, get the first and play it, Awesome game.

If You're a real gamer you will still play old while new is out.

Zelda Breath of the Wild is the best game on the Switch

Others have made great suggestions for games that are already out. If you're interested in something about to release, there's Bravely Default 2 on the 26th. The first was a 3DS game in 2012, and those who played it know it as reminiscent of old school (SNES era) Final Fantasy with some modern flair, but it was a great game and I'm sure the sequel will be too.

Dragon Quest XI S

Breath of the Wild

Xenoblade Chronicles Definitive Edition

Xenoblade Chronicles 2

Witcher  3

The Witcher 3

Animal Crossing: New Horizons

Legend of Zelda: Breath of the Wild

Fire Emblem: Three Houses

Monster Hunter Generations

Disgaea 5

The Elder Scrolls V: Skyrim Special Edition