Discworld is a fantasy comedy book series written by English author Terry Pratchett, set on the Discworld, a flat planet balanced on the backs of four elephants which in turn stand on the back of a giant turtle. The series began in 1983 with The Colour of Magic and continued until the final novel The Shepherd's Crown, which was published in 2015, following Pratchett's death. The books frequently parody or take inspiration from classic works, usually fantasy or science fiction, as well as mythology, folklore and fairy tales, and often use them for satirical parallels with cultural, political and scientific issues.
Forty-one Discworld novels were published. Apart from the first novel in the series, The Colour of Magic, the original British editions of the first 26 novels, up to Thief of Time (2001), had cover art by Josh Kirby. After Kirby's death in 2001, the covers were designed by Paul Kidby. The American editions, published by HarperCollins, used their own cover art. Companion publications include eleven short stories (some only loosely related to the Discworld), four popular science books, and a number of supplementary books and reference guides. The series has been adapted for graphic novels, theatre, computer and board games, and television.