The word sex has many implications when it is used in connection with video games. As game studies scholars have argued, games are player-driven experiences. Players must participate in processes of play to move the game forward. The addition of content that incorporates sex and/or sexuality adds complexity that other media do not share. Rated M for Mature further develops our understanding of the practices and activities of video games, specifically focusing on the intersection of games with sexual content. From the supposed scandal of "Hot Coffee" to the emergence of same-sex romance options in RPGs, the collection explores the concepts of sex and sexuality in the area of video games.