Deus Irae

Deus Irae is a post-apocalyptic science fiction novel written by two American authors; it was started by Philip K. Dick and finished with the help of Roger Zelazny. It was published in 1976. The novel's title, Deus irae, means 'God of Wrath' in Latin; the title is a play on words on the phrase Dies Irae, meaning 'Day of Wrath' or 'Judgment Day'. The novel was based on Dick's short stories "The Great C" and "Planet for Transients".