"Parental Guideline" ratings (kind of spoilery)

[Adeno]

Lol I remember covering a dead man's vienna sausage with a bucket just for fun

You know I didn't notice that Amnesia had no rating at all. I always thought those ratings were required by law. I guess it's something that those in the gaming industry fraternity just join in for its mass appeal towards the "family minded" types.

I wonder what would happen if the next game like Grand Theft Auto went on sale without any ESRB rating.