The Last City (3e)
With each rising moon comes the surface-blasting meteors of the lunar rain¸ destroying everything living below. All the major cities of DragonMech are reduced to rubble - except for one. The free city of Edge¸ carved into the solid rock of a 2¸000-foot tall cliff¸ still stands under the protective wall of its cliff face.
"Built into a natural cavern above a towering waterfall¸ Edge is the world's busiest trade port. An ancient river flowing from the heart of the underdeep divides the cavern in two. Each bank is a city unto itself - as is the nearby cliff-dweller settlement. No government has ever united these disparate populations. Will the rising mechdoms claim this merchant jewel? Or will Edge remain a rough-and-tumble frontier town like it's always been?