Marge Gamer is the seventeenth episode of Season 18. It originally aired on April 22, 2007.\rbr \rbrMarge discovers the Internet and gets hooked on an online fantasy role-playing game called Earthland Realms, where she interacts with practically everyone in Springfield, including Bart, whose online persona is the local tough guy, the Shadow Knight.\rbr\rbr Meanwhile, Homer becomes a soccer referee, which strains his and Lisas relationship when he has to call penalties on her.