Based in Swindon, UK, Mongoose Publishing was founded in 2001 and within 6 months became the UK’s largest publisher of roleplaying games. Initially concentrating on d20 based products, Mongoose Publishing's first book was the Slayers Guide to Hobgoblins, part of the Slayers Guide series of books. Subsequent product lines followed in rapid succession with the release of the Encyclopaedia Arcane, Travellers Tales, Quintessential and Cities of Fantasy series of books.

Mongoose has earned a reputation for producing quality licensed products to sit alongside their generic fantasy ranges and their first licensed book, the Judge Dredd roleplaying game, proved to be an instant hit. Further licensed products followed with roleplaying games based on Slaine, Babylon 5, Conan, Lone Wolf, Sea of Thieves, Paranoia and Runequest. Mongoose's largest licenced roleplaying game, Traveller, brings back the classic science fiction roleplaying game.

Mongoose Publishing's games continue to provide gamers with fantastic worlds in which to immerse themselves, and the company has become a recognised force in the world of hobby games.