Glow in the Dark is my love letter to the post-apocalypse, specifically Gamma World, Fallout, and Mad Max. The back of the book has this to say about it:
This is the white-line nightmare of the Cold War brought to half-life, a mythical doomsday that never was. Twisted metal rusts away under shifting dunes. Maniacs kill for food, for fuel, or for fun. You will create a tribe of survivors - a gang of post-apocalyptic scavengers and warriors desperate to survive. We will play to find out if your tribe can flourish despite other hungry gangs, forgotten pre-war threats, the unforgiving elements, and their own dark impulses.
Glow in the Dark can be played gonzo or grounded. There are factions of mutant apes, rogue AI, and self-driving trucks, but there are also plenty of speed freaks and cultists worshipping ancient relics if you’d prefer. Glow came out before the SRD even, so it only contains modifications to the rules you already know. It’s a short read!
There are also plenty of random tables for generating encounters while trekking, killer robots, post-apocalyptic vehicles, what that guy over there is wearing, and names like “Liam Nissan” and “Final Pam”.
You can find it on DTRPG: https://www.drivethrurpg.com/product/223216/Glow-in-the-Dark