We already have a term to call these types of games. It's called an adult game. That's what we call Leisure Suit Larry and the likes. Since you're translating to English, you should use English. Hentai is a Japanese word, and while ero-game is borrowed from English, it is still mostly a Japanese word. Since roxfan mentioned Google as the deciding factor, here's some stat:
378,000 for "adult games"
308,000 for "hentai games"
288,000 for "porn games"
13,400 for "h games"
4,990 for "ero games"
|