How’d dungeons get so big, anyway? Before fantasy games, dungeons were modest medieval cells or imprisonment-themed sex rooms. But in today’s post-D&D RPGs the dungeon might as well be the cornerstone of the universe. Any tough mazey place becomes a dungeon: labyrinths, catacombs, mines, caves, mansions, factories, and even spaceships are called dungeons if there’s someone with three health bars and a pot of gold inside. It’s understood that the Forest Temple in Ocarina of Time (1998) is a dungeon, Rise’s mind in Persona 4 (2008) is a dungeon, and Karazhan in World of Warcraft (2004) is a dungeon, though none of them…