Mega-City One is a huge fictional
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.