>>280556491
PC98 was THE nippons-only PC for eroge.
there's also an engrish website dedicated to it. forgot the name.
and the anime also mostly focused on the gal-gamus.
https://myanimelist.net/anime/54041/16bit_Sensation__Another_Layer

i only played 1 SPRG on it and forgot the name. i played DOS versions of the eroges from PC98.