According to the NPD, the growth of gamers ages 2-17 has outpaced the population growth of that age group. Over 90 percent of kids ages 2-17 (population of approximately 64 million) are gaming in the U.S., an increase of 9 points when compared to 2009.

“Year-to-date through August 2011, kids comprised 44 percent of new physical software dollar sales, representing a vitally important consumer segment for the games industry,” said Anita Frazier, industry analyst, The NPD Group. “Knowing how kids are spending their gaming time and dollars in both traditional and non-traditional outlets is key to staying relevant to this highly engaged audience.”

The growth of gamers has mostly been among kids ages 2-5, with females and teens ages 15-17 also contributing. Mobile devices have, not surprisingly, contributed quite a bit to in the increase of gaming; since 2009 gaming on mobile devices is up from 8 percent to 38 percent, gaming on traditional portable devices was up from 38 percent to 45 percent.

iOS and Android devices have proliferated greatly over the past couple of years, as has content for these systems. It is worth noting, however, that the amount spent on physical game products was over five times what was spent on app-capable devices in the past 3 months.