Currently, about 27% of those who own phones capable of playing games use them for such, up from 20% in 2004. 60% of the players are between 13-17. The average mobile gaming session, according to NPD Group, is 11 minutes long, and the primary motivation for playing games on phones is “to kill time or alleviate boredom”. Those who spend money on mobile game titles pay an average of 57% more on handsets, spend 22% more per month on wireless bills, and use 48% more wireless minutes. Only a third of mobile gamers would pay for one.