A typical dystopian film is one which is often, but not always, set in the future, in a society where the government is corrupt and/or ineffectual. The world within the film often has nightmare-like qualities, though it also usually includes elements of contemporary society. Often, dystopian films function as a warning against some element of modern society.
Dystopian movies that ended up on MST3k inevitably revolved scrapped factory equipment and factories, boiler rooms, with thinly populated casts and excessively complicated yet utterly irrelevant plots. Classics like Robot Holocaust, City Limits, and the railing festooned Space Mutiny exemplify all the horrors of this genre.