These games originate worldwide, on most platforms and can be of any video game genre.
Bishoujo game dating sim
Most eroge games, a fairly large library, found its way on the NEC PC-98 platform.
FM Towns also received many games, more so than Sharp X68000 or MS-DOS, whilst the MSX platform (which had many eroge games in the 1980s) was nearing the end of its lifetime by now.
The matter is further complicated by the fact that some hentai games (e.g.
Gun Blaze, Eve Burst Error, and others) were re-released (usually on a console system) with all explicit content removed.
In 1982, Japan's Koei, founded by husband-and-wife team Yoichi and Keiko Erikawa (and later known for strategy video games), released the first erotic computer game with sexually explicit graphics, Night Life, Also in 1982, the video game company Mystique released three unlicensed games for the Atari 2600; Beat 'Em & Eat 'Em, Custer's Revenge, and Bachelor Party.
The games were noted for their negative reception, particularly Custer's Revenge for its depiction of (what was perceived as) General Custer raping Native American women.
Despite his difficulties, Hisao is able to find friends—and perhaps love, if he plays his cards right.
There are five main paths corresponding to the 5 main female characters, each path following the storyline pertaining to that character.
Night Life (1982) was the first commercially released eroge.