I am not a great fan of those marketing stuff but it might give some insights. Mobiles Games Blog shows some mobile game stats, gathered by 2 companies: Overloaded and Inside Gamer.

The survey of a representative sample of 1.000 hard-core gamers in the Netherlands and Belgium reveals that 20% of mobile phone gamers would be interested in a games subscription when offered by operators or portals. Next to that, mobile phone gamers are not frequent users of other mobile phone content; 58% indicated to never download ringtones and 79% indicated never to download wallpapers....