In Japan, the preferred term is Eroge (エロゲ, short for 'erotic game'). Hentai (Japanese 変態, 'perverse' can also be understood as 'shape-changing' or 'weirdly shaped') is the term commonly used in the West for such games. This group may include any game with significant amounts of nudity and/or explicit sex scenes that was either made in Japan or clearly imitates the Japanese way of making such games.