Aftermath is a post-apocalyptic survival LARP set in the mid 20th century that is focussed on exploring a ruined city in search of resources.
It is the end of Summer, 1967, just over a year since the world as you knew it ended.
In July of 1966, the world received undeniably proof of the existence of the supernatural as the world was ravaged by monstrous creatures, supernatural phenomena and vast creatures that had appeared from below the sea and beyond the stars (most of the population of the US Eastern Seaboard walked into the sea, days later, a seemingly endless tide of walking corpses emerged from the sea; great white apes destroyed villages in the Himalayas; mile-tall humanoid figures with writhing tentacles in place of their heads emerged from the sea and drove almost all who saw them insane; etc.).
By September, the USA and the USSR had jointly declared war on these ‘giant ones’ and nuclear missiles were launched. The giant ones, seemingly unphased by the greatest display of force humanity could muster, counterattacked. By the end of September, all of human civilisation lay in ruins.
Now, monsters roam the ruins of the old world, some of them vaguely recognisable from ancient myth, some whose very form frayed the mind of those who looked upon them and some who were, or had once been, human. The last remnants of humanity struggle to survive in the haunted ruins of their civilisation.
Game information can be found here