Lawmakers worry that some of the more violent video games go too far and make the players dangerous.
Images: Games under the gun
"Grand Theft Auto: San Andreas" is the most frequent target of lawmakers and advocates who want to restrict sales of violent video games. An Alabama family filed suit against Take-Two Interactive and others, saying the publisher's "Grand Theft Auto" games inspired a young man to kill three police officers.
In "Narc," players act as narcotics officers trying to arrest drug dealers. In doing so, the officers have the opportunity to partake of several illegal substances, to varying effect. Taking crack makes a player a better marksman, for instance, while a puff of marijuana slows the action of the game.
The 1992 shooter "Wolfenstein 3D" was one of the first games to inspire broad concern about game violence. Two years later, the Entertainment Software Ratings Board was formed to apply movie-style ratings to games.