* The series of books are set in a world that is a flat disc, carried on the backs of four elephants, astride a giant turtle
* The first book, The Colour of Magic, was published in 1983
* The 39th book in the series, Snuff, is due to be released in October
* One of the main characters in the novels is Death, depicted as a 7ft skeleton on a horse called 'Binky'
* Other characters include wizards and vampires