So many, in fact, that new players may find themselves confused over which campaign setting to go with.
Tons of new players are hopping on the Dungeons and Dragons bandwagon all the time, but there's a long history to the game, and that means there are a dizzying number of possible worlds to explore. Dungeons and Dragons has made a huge comeback over the last few years, and it was already the best-known tabletop RPG before that.