PC-98

The NEC PC-9801 was the Japanese equivalents of the Western PCs, the 16-bit successor to the 8-bit PC-8801. Like the IBM Personal Computer, it used Intel 80x86 or equivalent CPUs, and could run versions of MS-DOS and Microsoft Windows, but was otherwise not IBM-compatible competition. For more details see the other wiki's article.

More interesting about the PC-98 was its collection of games, many of them being Eroge (beware of NSFW images likely to turn up in searches). Here is an incomplete list. In fact, the PC-98 most likely holds the title of most H-games on a platform.

Games that originally appeared on the PC98

4.6 Billion Year Story: The Theory of Evolution
Brandish
Cobra Mission
Corpse Party
Dragon Knight III
Farland Story
Nocturnal Illusion
Policenauts
Rusty
Touhou (the first 5 games)
Yu No