there is, ESRB rating of AO Adults only, its on very few game titles, mostly playboy calander or something like that, you can search for it on the ESRB ratings website. and of course you wouldnt consider the ratings, the ratings weren't ment for you, they are ment for parents of young children who want to buy their children a game. Agreeing with eariler posts, this rating system would be great if people actually used it.