though some settings are published with the intent of being usable in many games. There are numerous campaign settings available both in print and online. In addition to published campaign settings available for purchase, many game masters create their own. Campaign settings exist for almost all genres of fiction. Because two long-time best-selling role-playing games, Dungeons & Dragons and Pathfinder, are part of the fantasy genre, fantasy is among the most played role-playing genres. While role-playing's roots began in fantasy, science fiction has been used in settings such as Traveller, horror formed the baseline of the World of Darkness and Call of Cthulhu while Spycraft was based in modern-day spy thriller-oriented settings. The comic book and superhero genres have been utilized for games such as Mutants and Masterminds. The size of a setting can vary. Campaign settings such as the World of Greyhawk detail entire cosmologies and time-lines of thousands of years, while the setting of a game such as Deadlands might only describe one nation within a brief segment of alternate history, and others like Blades in the Dark describe a single city. Some settings involve shifting between multiple different planets or timelines, sometimes with their own genres. For instance, in GURPS Infinite Worlds, the characters are "Infinity Patrol" agents who travel to alternate worlds, some of which include fantasy or steampunk as well as science fiction elements. A number of campaign settings have fused multiple genres into a single game. Shadowrun combined fantasy with cyberpunk, Castle Falkenstein drew on fantasy and Steampunk elements, and Torg mashed up fantasy, science fiction, pulp and horror elements. Meanwhile, Feng Shui combined Chinese historical fantasy with Kung Fu action tropes and dystopian science fiction. Publishers The largest publisher of role-playing games is Wizards of the Coast, a wholly owned subsidiary of Hasbro and publisher of Dungeons & Dragons. Other major companies in 2020-2021 included Onyx Path Publishing (Vampire: The Requiem, Exalted, and others), R. Talsorian Games (Cyberpunk), Paizo (Pathfinder), Evil Hat Productions (Fate), and Modiphius Entertainment (numerous licensed games), as tracked on ICv2's Top 5 Roleplaying Games articles and the Bestselling Titles list on DriveThruRPG. Most role-playing game publishers are privately held companies and do not release sales figures, making precise estimates difficult. There has been no publicly available, systematic examination of point of sale data, limiting further estimates to a rough consensus between industry analysts. In 2006, non-Dungeons & Dragons tabletop