As newer platforms bring in a wider audience of gamers, the demographics of game players are changing. According to a 2013 survey from the Entertainment Software Association (ESA), the makeup of US gamers was not as heavily skewed toward men and younger users as might be assumed. Women made up 45% of the gaming audience, and 68% of gamers were over the age of 18.
The ESA put the penetration of total video game players across platforms at 59%. Read the rest at eMarketer.