I know there is a classification by the ESRB, either A or AO for adults only, that is stronger than M.
Why haven't there been any games for the consoles with this rating (or have there been?)?
I know a lot of chains wouldn't carry them, but they'd be almost guaranteed to be big sellers, if for no other reason than people would be curious as to what is allowed in a truly no-holds-barred title.
What taboos would you like to see broken?