Classic handheld games are coming to the subscription service later today.
Golden Sun and its sequel heading to Nintendo Switch Online next week
Game Boy Advance™ - Nintendo Switch Online – Nintendo Official Site
Game Boy Comes to Nintendo Switch Online – GB Studio Central
Game Boy Advance Games on Nintendo Switch Lite Gameplay
Sources claim that Game Boy Color games are headed to Nintendo Switch Online's service
How to give Game Boy and Game Boy Advance games a retro look on Nintendo Switch - Polygon
Every Game Boy & GBA Game Confirmed For Nintendo Switch Online
Switch Online may add Game Boy and Game Boy Advance games
All Game Boy and Game Boy Advance games on Nintendo Switch Online