The series, set mainly in the near future, deals with the effects of humanity's discovery of the Long Earth, a chain of alternate versions of the planet Earth.
The books follow the lives of a number of characters, in particular Joshua Valienté.
It was written while his first Discworld book, The Colour of Magic, was undergoing publication, and was intended as a potential starting point for another novel. The Colour of Magic, however, was very successful, causing him to put the story aside in favour of writing a sequel to that.
The following is a list of the five novels in the The Long Earth Series.
- The Long Earth (release: 21/6/2012)
- The Long War (release: 20/6/2013)
- The Long Mars (release: 19/6/2014)
- The Long Utopia (release: 18/6/2015)
- The Long Cosmos (release: 14/6/2016)