Solo-Play Adventure Game were two role playing novels published by FASA in 1986. They used the same game mechanics as The Doctor Who Role Playing Game, but were designed to stand alone. They could be played with or without dice; without dice, a sequence of numbers printed in the upper corner of the pages could be substituted for a dice roll by flipping through the pages and stopping at a random point.
While the novels were written with the player/reader taking the role of the Doctor, a character created in the Doctor Who Role Playing game could be substituted for the Doctor if the player/reader wished. Conversely, a game-master in the RPG could use the gamebooks as scenarios for his or her players.