The world of games has historically been strongly gendered and unwelcoming to female players. Let me give a century-old example: in 1913, H. G. Wells published a book of rules for playing war games, whose title is Little Wars: a game for boys from twelve years of age to one hundred and fifty and for that more intelligent sort of girl who likes boys’ games and books. I guess no comment is necessary.
The study of how gender identity is presented in games combines approaches from gender, social, and cultural studies. Sometimes, a gender study of a game might offer evidence on cultural issues related to gendered identity.