Rule System. Marvel Universe had been licensed to the canceled Marvel Super Heroes, Marvel Universe Roleplaying Game and Marvel Adventure Game. META-4 (M&M) Mutant City Blues, a near-future superhero setting using the Gumshoe System Omlevex (Third-Party M&M) Watchmen, by Alan Moore, was released to the DC Heroes system. Wild Cards (uses GURPS or M&M) Multi-genre Castle Falkenstein (role-playing game): New Europa Deadlands Feng Shui (role-playing game) Over the Edge (role-playing game) Shadowrun Tails of Equestria TORG Comedy/satire Alpha Complex (Paranoia) Discworld (GURPS) Illuminati University (GURPS) See also Dungeons & Dragons campaign settings List of fictional universes References External links DnD wiki campaign listings Links to many homebrew settings RPG Gateway's campaign listings Links to many homebrew settings, with ratings and summaries RPG Net's list of homebrew campaign settings A lengthy list of homebrew settings available online Campaign settings