Mega-City One is a huge fictional post-nuclear megalopolis-size megacity city-state covering much of what is now the Eastern United States and some of Canada in the "Judge Dredd" comic book series and its spinoff series. The exact geography of the city depends on which writer and artist has done which story, but from its first appearance it has been associated with New York City's urban sprawl; originally it was presented as a future New York, which was retconned as the centre of a "Mega-City One" in the very next story.