Therefore, its known narrative elements are not a part of the Doctor Who universe. It may have been the basis for a similar story in another medium, however — and that story may indeed be a part of the DWU.
The Nightmare Fair was an unproduced TV story for the original Season 23, before it was put on hiatus. In the script he says Blackpool, setting the scene for this episode. It would have featured the return of Michael Gough as the Celestial Toymaker. This story would have followed straight from the previous episode, Revelation of the Daleks.
Plot set-up Edit
The idea had come to John Nathan-Turner to set the story in Blackpool when Colin Baker opened a ride there called "Space Mountain." The story would also have been set partially there, with the Celestial Toymaker making strange things happen.
Peri would have been attacked by robot miners in a gold mine adventure ride. The Doctor would have been forced to play a video game whose outcome would decide the fate of the planet.
The story was later adapted into the Target Missing Episodes lost story. It would also receive a Big Finish Productions audio adaptation. Michael Gough declined to do the episode, so David Bailie was cast instead.