For other fans of dystopian media, what do you consider a dystopian classic? "Dystopian" meaning roughly a depiction of a dark and dehumanizing future society. And "classic" meaning is it worthy to be enjoyed across multiple generations. Any media- Books, film, TV, video games.

I think the following books are shoe-ins:

1984
A Brave New World
Do Androids Dream of Electric Sheep?


What else belongs on the list?