A bishōjo game (美少女ゲーム, bishōjo gēmu?, literally "pretty girl game"), or gal game (ギャルゲーム, gyaru gēmu?, often shortened to "galge"), is "a type of Japanese video game centered on interactions with attractive anime-style girls". These games are a sub-genre of dating sims targeted towards a heterosexual male audience.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 eroges (often called "hentai games" in English).