Description from itch.io:
A struggling farming town in the middle of a nuclear wasteland, an eco-dome housed in the remains of a city, or a crumbling metropolis governed by robotic rule - life and survival in the far, far future is hard and bleak. Such lives spurs adventurers to risk their minds and bodies in the most difficult environs to survive.
The Abandoned World is a setting for Trophy Dark and Trophy Gold the collaborative story telling game of the ruin and destruction of adventurers. The rules within Shadows of a Tesseract provide backgrounds, occupations, equipment, and rituals to create adventurers in the bleak wastelands of the Abandoned World. Included with the rules to create adventurers of the Abandoned World is a search for treasure within the desert ruins of the Hexahedral City.