Like other pornographic media in Japan, erotic scenes feature censorship of genitalia, only becoming uncensored if the game is licensed and released outside Japan, unless produced illegally by doujin (usually with a construction kit like NScripter or RPG Maker).Additionally, some games may receive an "all-ages" version, such as a port to consoles or handheld devices where pornography isn't allowed, which remove the sex scenes entirely.
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.
Soon, new genres were invented: ASCII's Chaos Angels, a role-playing-based eroge, inspired Dragon Knight by Elf and Rance by Alice Soft.
In the early 1990s eroge games became much more common.
NEC was behind its competitors in terms of hardware (with only 16 colors and no sound support) and needed a way to regain control of the market. The first commercial erotic computer game, Night Life, was released by Koei in 1982.
Early eroge usually had simple stories, some even involving anal sex, which often led to widespread condemnation from the Japanese media.