...huh, apparently there was a portable version of the PC-Engine / Turbografx, with a gameboy form factor but a backlit screen and full compatibility with all PC-Engine games
and it came out in 1990
apparently the reason it didn't do well was 1) NEC was really bad at advertising, 2) it was expensive as fuck, and 3) NEC wasn't really a well known game company on the scale of nintendo and sega
(only reason 2) applies to japanese sales though)
@Violet oh wow, that looks like a neat museum
I think I've seen ashens videos on most of these things