Unlike other fictional universes, the Doctor Who universe is created solely by fiction. To us, this is a secondary source. Information from this source can only be used in "behind the scenes" sections, or on pages about real world topics.
The following are make your own adventure books, where the reader chooses a path through the narrative based on choosing from any number of options. This genre is also known as gamebooks or Choose Your Own Adventure books, although the latter term properly refers to one popular publishing line in the genre.