The ability to play emulated Game Boy games has been uncovered within the files of Nintendo Switch.
Specifically, Nintendo-made emulators codenamed Hiyoko (for Game Boy) and Sloop (for Game Boy Advance) have been detailed as part of a new datamine.
To date, there’s been no official word on Game Boy emulation for Nintendo Switch, though Eurogamer previously reported that it was being worked on by Nintendo.
Datamined information posted by Trash_Bandatcoot, suggested the emulators were developed by NERD (Nintendo Europe Research & Development) and were “both functional, albeit with a few bugs”.
Reliable Nintendo dataminer OatmealDome added that Hiyoko, the Switch’s Game Boy emulator, “appears to have netplay support for link cables” – meaning you would be able to simulate having two Game Boy handhelds linked together, (for instance to be able to trade Pokémon).