Pokemon Trading Has Been Tested On Nintendo Switch Online's Game Boy Emulator

Pokemon Gen 1 to 3 games haven
Pokemon Gen 1 to 3 games haven't officially made it onto NSO yet, but a programmer demonstrated that trading should work flawlessly.

Nintendo Adds Game Boy Games to Switch Online, But There's an Expensive Catch

As Expected, GBA Wii U Virtual Console Games Don't Support Multiplayer - My Nintendo News

Nintendo Switch Online: GoldenEye 007 Joins N64 Retro Library - CNET

Nintendo Switch Online Game Boy and Game Boy Advance games

Nintendo Switch Online New GBA Leak - Checkmate Gaming.

Can I trade my Mewtwo and other 20+ year old Pokémon from OG Pokémon Red all the way to Pokémon Sword & Shield? 🤔 : r/PokemonSwordAndShield

Alleged Leaks Reveal Game Boy And Game Boy Advance Games Coming To Nintendo Switch Online - Bounding Into Comics

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Rumour: Game Boy And Game Boy Color Games Still Expected For Switch Online

The classic Pokémon games must make the jump to Switch

Game Boy And GBA Coming To Switch Online Today