Bryson Springs (2013)

From publisher blurb:

This systemless horror scenario originally appeared in the No Security kickstarter. In June of 1935, the Dust Bowl still plagued the American Southwest, a third of all people were out of work, and the government’s path to recovery was far from certain. Amidst this Great Depression, the Bryson Springs Ranch suffered a hardship altogether more extraordinary. People were dying in the migrant workers’ shantytown, dying in horrific, mind-boggling ways. Players take the roles of strangers, cast about by the hard times and drawn into the nightmare that is Bryson Springs. They must band together to confront the things which stalk the desert night, hunting the downtrodden for their dark and blasphemous god.