Game Boy - Nintendo Switch Online

Game Boy - Nintendo Switch Online is an application released for the Nintendo Switch alongside Game Boy Advance - Nintendo Switch Online on February 8, 2023 in the Americas and February 9, 2023 overseas, shortly following its announcement in the February 2023 Nintendo Direct. It features a library of Game Boy and Game Boy Color games, which can be played in the Game Boy, Game Boy Pocket, or Game Boy Color screen filters. Multiplayer-compatible games such as Tetris can be played with other Nintendo Switch devices locally or online.

Button mapping
Despite the fact that only one controller can be connected to the app at a time and multiplayer requires each player to own a console, the app allows players to use a single Joy-Con.