Authors That Use Shared Universes in Their Books

Universe spanning media is on trend right now. I believe there are no less than 790 Marvel movies and TV shows, comics and books, stage musicals and porn parodies (so many porn parodies), that all share their own universes. But Marvel isn’t the only game in town. Many authors create media that shares a universe, even if they sometimes don’t share characters. Here’s a list of some of the authors I believe do it best. This list does not count crossovers (the merging of existing characters into a shared universe), or cameos by characters from other media.