Pratchett has written over twenty novels using the Discworld setting; of these, Small Gods would perhaps be the most closely related to Hogfather, as both deal with religion as a topic. The Discworld itself was introduced in The Colour of Magic and The Light Fantastic; these were primarily satires of the genre itself, In later novels, Pratchett focused on specific social issues (as in Hogfather, or Jingo—a novel examining ideas about war) or specific locales (as in The Last Continent, a parody of Australia).