content: I just recently watched the first two Mad Maxes.  The first one is pretty different.  Civilization still mostly exists and the main enemy is just a regular gang. But by the second mad max you're deep into post-apoc sci-fi territory.  Road Warrior actually seemed to have a lot more different characters and explicit world-building compared to Fury Road, which was mostly confined to the truck, and which left the world ambiguous.  Anyone who liked Fury Road should definitely at least check out Road Warrior if they want more.