Chicago area Hyacinth Games (Hello neighbors!) has released a second edition of their popular Wreck Age skirmish level post-collapse of humanity miniatures rules. I believe the original book was an RPG/miniatures hybrid whereas this new book is a full on, full throttle minis system. In Wreck Age, players will lead their factions through various campaigns as they struggle to survive on a dying Earth. Currently you can snag the 132 page PDF from DriveThruRPG for $12.50.
From Hyacinth:
Welcome to The Resurgence. Welcome to the Wreck Age.
Wreck Age is a dystopian, post-Exodus adventure game, where struggling communities vie for resources on a post-collapse Earth.
In the 23rd century, the Earth verged on total annihilation. Rapid climate shifts, caused by centuries of industrial pollution and nuclear waste, had brought the planet to the brink of an ecological meltdown. Countless reparative efforts had failed; each solution was too little and far too late. Left with no alternative, world leaders collaborated on a last-ditch effort to save humankind: the Exodus. It was a bold plan involving several waves of evacuations, with the end goal of colonizing new planets. The Exodus promised survival for everyone. It was an escape from a decaying planet.
It was hope.
It was a lie.
The brilliant, the rich, and the powerful gathered their families, their valuables, and their resources for the first wave. They left Earth in a flotilla of arks, scientific vessels, and seed ships. Within a few days, however, it became clear that there would be no second wave. Hope mutated into rage as the ill-fated masses realized they had been left behind to rot. Governments fell apart and economies crumbled; the world collapsed into anarchy.
As society collapsed, so too did the Earth itself. The oceans rose, natural disasters ravaged the coasts, and chemical rain scorched the arable land. Countless species vanished, either slaughtered outright or dying en masse, unable to adapt to the perilous new environment. As catastrophes crashed down one after another in a crescendo of failure, humanity itself came dangerously close to extinction.
Since the Exodus, uncounted generations have eked out a harrowing, threadbare existence with what little remained. Now a new world is emerging from the ashes. Every storm eventually passes; every desolate winter eventually melts into a fragile spring. Yet the scars of suffering and chaos remain. Recovery will be slow and painful. Few grand cities remain, and even fewer great leaders. There is no centralized structure. The powerful fight over the scraps of the old world, while the weak struggle just to make it through another day.