https://techcrunch.com/2021/05/17/hardware-hacker-brings-online-multiplayer-to-the-original-game-boy/

Move over, Xbox and PlayStation. A new foe has appeared in the world of online multiplayer gaming! It’s the… uh, Game Boy. As in that unbreakable, gray, 4.19Mhz tank from 1989.

While the Game Boy has had a handful of locally multiplayer games since the beginning, using it meant physically connecting your Game Boy to another Game Boy via an accessory called the link cable. If you wanted to play some Nintendo with someone further than a few feet away… well, you’d just have to wait a few decades.