Confirming what anyone who's ridden a bus lately could probably guess, the NPD recently released a study that shows that the free and mobile segment of the gaming population is the largest segment of gaming...and it's growing.

According to NPD's Gamer Segmentation 2013 report, the segment of gamers who admit to playing free or mobile games has grown 2 percent this last year, helping the category grow to 29 percent of the gaming population. Console gaming may also be on the rise, as gamers who play on multiple systems, like consoles and PC, has risen to consume 16 percent of the gaming population. The study also revealed that avid gamers tend to play games on an average of five difference devices, but the Xbox 360 seems to be the most popular console among this segment.

Want to know which mobile games you should be playing? Check out our Essential iOS/Android List from last year or our more recent spotlight of ten worthwhile mobile sports titles. Jump to the next page for a look at NPD's press release.