Average age of gamers continues to rise (now 37). Female population continues to rise due to casual/mobile games (42%). Who buys most games? 41 year olds (was 39 last year). Males average 13 years of gaming, females 10 years.
Lots of good data points, but they ALWAYS fail to answer a huge question about methods: how do you define a gamer? Depending on how you define a gamer dictates who is included/excluded in these types of studies and drastically impacts all the age/gender data.