Violent video games are getting more bad press this week after the revelation that Newtown shooter Adam Lanza had thousands of dollars worth of such games and played them regularly.

And while there is no proven link between violent games and violent behavior, many of the top selling titles, like Call of Duty and Halo, are built around the use of guns. It's a vastly different game culture than the one many people grew up with, where characters ate power pellets or jumped over barrels.

Todd Martens, a critic for the LA Times who has recently written about violent video games, joins the show.