mega-city one
A massive and futuristic, crime infested decaying city covering much of what is now the Eastern United States 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.
The city evolved out of a growing urban conurbation stretching from Boston to Washington D.C., which took form in the 21st century to cope with the escalating population crisis in America and - due to the high crime rate - led to the introduction of the "Judge" system.