I find that, in games like Reach, and Halo 4, the number of female spartans I observe is much more likely to be representative of how many girls are playing the game. And it appears to be a small number. On the same token, if everyone playing an MMO were their real gender, it would look like all of the women were abducted. Granted I've [i]heard of[/i] girls who play as boys to avoid the usual "look its a girl!" attention. I expect that over time girls will be come more accepting of video games and the proportions might start to even out. Maybe it will eventually stabilize at something like 30% female 70% male, of course that all depends on the type of game.