Dungeons & Dragons players gathered in game stores around the country Saturday to celebrate the 30th anniversary of the grandfather of fantasy role-playing games — a pop culture phenomenon that has influenced myriad video games, books and movies. —Gamers mark 30 years of Dungeons & Dragons (CNN|AP)

Dungeons & Dragons was one of the influences on Will Crowther’s creation of Colossal Cave Adventure, the first interactive fiction game.