36 virtual worlds, 4 images per world: 144 images in total, over a hundred of which depict female characters. Only World of Warcraft, Old School Runescape, WildStar, Albion Online, MUD, Second Life, Lord of the Rings Online, Star Trek Online, Runescape 3, Age of Conan and Dark Age of Camelot have more male characters than female ones. I don't know what this says about virtual worlds, their players or Midjourney, but I'm sure there's at least a Masters thesis in there somewhere.
