This DIY Kit Could Turn Your Game Boy Color Into a Mini Gaming PC - midwest.social
The ReBoi kit promises to replace the Game Boy’s guts and display with no
soldering required, but you’ll need to source the Game Boy and Raspberry Pi
yourself.
Yeah, I think this is more of a novelty or a “because I can” sort of thing. There are enough mini retro handhelds out there that play more systems for less cost. (RIP my Miyoo Mini v1)