Gunslingin'

The United States is a place of ruination. When the seas finally retreated the land and cities were decimated. The Midwest has turned to desert. What was the Mississippi River is now a great chasm dry, cutting into the earth. The entirety of the east coast is marsh or swamplands, haunted by wet-folk, vicious critters and swamp hags.

Florida is gone.

Michigan is an island protected by some sort of Elven mysticism.

New Mexico is claimed by Dwarfs, holding enclaves in ancient adobe cities.

No one's been far enough out west to know whats happened out there.

The great cities of the past are a series of massive ruins. The salt water took a great toll on everything it touched. Survivors of a kind have flocked to these cities though. Its all an illusion of safety though, the cities teem with things that creep and crawl just as much as the wildlands between them.

In many cases, those same survivors are just as much critter as they are human...