Thats something i don't understand too. In Amerika you get Punished by having the Playboy on you.
In Germany you can go as 6 Years old in a Sexshop and no one Cares.
Steam EroG are Really extreme. In Germany you must be Really Lucky, so you can Download a EroG. Even when you confirm your age.
And when you found one you can get. It will Censored to Dead so you cant Play it without the Game Crashes, because the Follow Scene is not Found in the Censored Version. Or it lose some story and make the Screen Black every Second.