I'm thinking somewhere in the region of 14-17 years. This is only a guess, though. Polls and statistics ought to be taken with a grain of salt because there are a ton of variables to take into consideration. There are probably quite a few FeralHearters who have been playing the game since it first started and rarely go on the forums, if at all. Those folks probably won't be voting in this poll, which takes away potential information on ages.