The top 3 selling video games of 2012 were of the violent shoot 'em up type.

"Call of Duty" and "World of Warcraft" were reportedly Adam Lanza's favorite games.

The Kaiser Family Foundation reported that the Average 8-18 year-old spends 53 hours a week on computer/watching TV/playing videogames.

http://www.kff.org/entmedia/entmedia012010nr.cfm