SAN DIEGO -- Beating up women, carjacking and street brawls are low on the list of crimes in the new video game, "Grand Theft Auto IV."

"It's for fun. It's a game," said video gamer Jose Perez.

Perez purchased his copy of "GTA IV" on the very day it was released and said the violence doesn't faze him because he's an adult.

"Yeah, I'm 24-years-old. I know what it is. You can't get in trouble in a game," said Perez.

"If adults want to do it, that's their choice. But that's not where the problem is," said John Douglas.

The problem is marketing, according to Douglas. He said game makers and retailers are targeting children.

"It's inside their stores, on their windows," said Douglas.

For 20 years, Douglas worked for video game companies, but burned out when he saw the violence escalating.

"Personally, I think it's sick and twisted," said Douglas.

But Douglas agreed that it is protected by the First Amendment. He just thinks mature games like "Grand Theft Auto" should be treated like pornography.

"They should be putting this stuff behind the counter so that the adults that want it can come in and ask for it, like they would an adult magazine," said Douglas.

Perez agreed that children shouldn't be playing violent games.

But he plays on because it's not a crime to play "Grand Theft Auto IV."