Game Boy™ - Nintendo Switch Online - Nintendo Official Site

Play classic Game Boy games like Kirby's Dream Land™, Metroid™ II - Return of Samus™, and Wario Land™ 3 anytime, anywhere on the Nintendo Switch system with Nintendo Switch Online.
Game Boy™ – Nintendo Switch Online

Game Boy™ - Nintendo Switch Online - Nintendo Official Site

Fire Emblem for Game Boy Advance Rekindles the Flames of Battle on Nintendo Switch Online + Expansion Pack June 22 - News - Nintendo Official Site

Nintendo Switch Online - Nintendo - Official Site

Nintendo Switch Online reportedly adding Game Boy games

Super Nintendo Entertainment System™ - Nintendo Switch Online - Nintendo Official Site

Game Boy, SNES, and NES - Nintendo Switch Online add Blaster Master: Enemy Below, Kirby Tilt 'n' Tumble, Harvest Moon, and Mystery Tower - Gematsu

Game Boy™ - Nintendo Switch Online - Nintendo Official Site

Game Boy Advance™ - Nintendo Switch Online – Nintendo Official Site

Nintendo Switch Online updates: Here's what was recently added to the Game Boy and NES collections (and F-Zero 99)! - News - Nintendo Official Site

Game Boy Advance™ - Nintendo Switch Online – Nintendo Official Site

Nintendo Switch Online - Nintendo - Official Site