Mega-City One is a vast, sprawling metropolis in the Judge Dredd comic series, set in a post-apocalyptic future. It stretches along the eastern coast of the United States, housing over 400 million residents. The city is characterized by towering skyscrapers, overcrowded streets, and a mix of advanced technology and urban decay. The city is governed by the Judges, a group of law enforcement officers with the authority to arrest, judge, and execute criminals on the spot. Mega-City One faces numerous challenges, including rampant crime, poverty, and political corruption, making it a chaotic and dangerous place to live.