Here's another scenario for playing an RPG in the world of Judge Dredd. The title of it comes from
the latest craze to sweep through Mega City One, "Sledding", where citizens climb onto wheeled sleds and zoom down the outside of the blocks and right into trouble. I've played this successfully with three Judges using the FATE system. The scenario itself is about as generic as they come so will fit whatever system you're using for Judge Dredd.