What is Visual Novel Hentai games?

Visual novels originated in and are especially prevalent in Japan, where they made up nearly 70% of the PC game titles released in 2006. In Japanese, a distinction is often made between visual novels (NVL, from “novel”), which consist primarily of narration and have very few interactive elements, and adventure games (AVG or ADV, from “adventure”), which incorporate problem-solving and other types of gameplay. This distinction is normally lost outside Japan, as both visual novels and adventure games are commonly referred to as “visual novels” by international fans.