Hentai games are typically uncensored with full nudity and explicit sex scenes. From visual novels and dating sims to lewd RPGs and adventure strategy games, adult hentai games can range from softcore to hardcore, with some titles bordering on extreme. The hentai porn genre was originally exported from Japan, but the massive demand for anime porn games has seen a rise in developers and studios all over the world.
Here in the west, we call them hentai games. Eroge (anime porn) is the catch-all name given to erotic games that consist of animated porn and Japanese cartoon-style graphics.