Nihimana
Nihimana is a post-apocalyptic setting akin to Mutant World. However¸ this world is both darker and harsher... Far in the future¸ after a near-total collapse of the planet's environment¸ the surviving fragments of humanity were driven into a period of wandering savagery. After centuries of aimlessness¸ there arose a beacon of gleaming hope in all that burning waste; the City of Nihimana¸ the last fragment of the old world. Equipped with powerful renewable technology and protected from the worst effects of the shattered ozone layer¸ a new chapter in the dark history of humanity begins.
Characters might take on the rolls of "Pure" humans¸ who maintain a powerful grip on the city and its resources¸ or of Mutants¸ whose twisted sad forms dot the gutters of the domed city. Genetic disease and cancer plague all but the luckiest¸ and life of the downtrodden is cheap. Yet secret societies strive to gain power¸ seeking to turn the path of the future to their own designs. It is a time of change and survival in a cruel and harsh world¸ the few moments of honor and bravery shining all the brighter.
The Erwinian Roleplaying System is a multi-generational labor of love initially created by Eric Erwin and his father Jim in the 1980s¸ developed through the 90s and 00s¸ compiled and edited by his son Joseph in the 10s¸ and finally published in the 2020s. The project has grown to include Joseph's wife Emma and his brother Emmett. Borrowing some core concepts from the OSR tradition¸ Erwinian has since evolved into something all it's own.
The Erwinian Roleplaying System is designed as a universal framework which can be adapted to many settings¸ both pre-made or created by the GM. The system thrives on flexibility and creativity¸ with GMs and players being given the freedom to interpret the rules in their own way and develop new rules through creative discussion. Using the Core Rules as a jumping off point¸ they are encouraged to make their own spells¸ their own programs¸ their own abilities and so much more.
For some more info on the system¸ visit: https://joseph-erwin-dm.com/the-erwinian-roleplaying-system/