Boys' Love (BL) games (also known as yaoi games) usually refers to eroge oriented around male homosexual couples for the female market.
However, there are also many other gameplay genres represented within eroge, such as role-playing games, mahjong games, or puzzle games.
Some eroge, such as those made by Illusion Soft, are just simulations of sex, with no "conventional" gameplay included.
As with yaoi manga, the major market is assumed to be female.
Games aimed at a homosexual male audience may be referred to as bara.
Although many eroge still market themselves primarily on sex, eroge that focus on story are now a major established part of Japanese otaku culture.
Oftentimes, voice actors who have voiced for eroge have been credited under a pseudonym.
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.