Well, that is an interesting question now. Many people consider Visual Novels to be games but others consider them to be their own thing, its own form of media! I like to consider that they are both games and their own thing. Now many say that they aren't games to diminish them, because of some old and useless preconceptions of what makes something a real game, and I think those people are just boring and can't enjoy the nice things in life.
Also, its genre is yuri romance.