This website contains age-restricted materials including nudity and explicit depictions of sexual activity.
By entering, you affirm that you are at least 18 years of age or the age of majority in the jurisdiction you are accessing the website from and you consent to viewing sexually explicit content.
I mean the point of all rating systems in the US was fear of government regulation of content and having to fight that particular legal battle. It basically exists because moral busybodies were upset about Night Trap, Mortal Kombat and Doom.
Yes, this is true. And I think the industry managed to pull together a pretty decent one.