Perhaps that reporting is for good reason: An estimated 97 percent of America's young people are playing video games, with many of the most popular ones featuring violent content [sources: Markey, NPD]. And by a 2008 estimate, they're playing them for an average of 13.2 hours per week [source:Gentile]. On top of the obvious generation-gap questions (what happened to riding bikes around the neighborhood?), we now face more ominous ones. What appears to some to be a connection between violent game play and actual violence has many wondering about the effects of immersive violence on young minds.