Among early bishōjo adventure games it had a degree of polish that previous games lacked.
It was also the first to have recognizably modern anime-style artwork: its characters had very large eyes and a tiny nose and mouth but were otherwise basically normally proportioned, characteristics which today are found in virtually all bishōjo games.
Prior to 1985, girls were generally drawn either as normally proportioned adults or super deformed children.
These came to national attention in Japan in 1986 with the release by d B-soft of 177, a game where the player takes the role of a rapist.
(The game's title originates from the number of the Japanese law criminalizing rape.) 177 was not actually the first game designed around this premise, but it was unusually explicit.
The game caused debate in the Japanese parliament and was eventually recalled and re-released with the most controversial scenes removed.
Bishōjo games are a uniquely Japanese phenomenon: they have virtually no equivalent in the Western video game industries, but are similar to Choose Your Own Adventure books.
They form a sizeable fraction of the Japanese market: the most popular have sold over a million copies, and they make up the majority of offline PC games in Japan.
Nevertheless, only a few titles of this sort have been translated or commercialized outside of East Asia.
Notable subgenres of bishōjo games are ren'ai games (often called "dating sims" in English, although they can also be visual novels) and eroge (often called "hentai games" in English).
Bishōjo games began to appear in Japan in the beginning days of personal computers.
The first bishōjo game commercialized in Japan appeared in 1982 as Night Life by Koei.