BosWash
Mega-City One is the setting of the 2012 film "Dredd", though it occupies a smaller area than described in the comics. According to Judge Dredd (Karl Urban), the boundaries of Mega-City One reach "from Boston to Washington D.C." (similar to the real-life concept of the Northeast megalopolis) and contains a population of 800 million. The city blocks are large, brutalist structures that tend to be slum areas; each block can seal itself off with blast shields and communications blackouts in case of war. Technology is much less advanced (outside of Justice Department equipment) and all non-Judge vehicles resemble early-21st-century models.