The Lifeboat Wiki
From Sinanju
Gamma Prime - Primary settlement of Gamma World, and home to most of the 7,500 refugees from Earth and a few other worlds.
Gamma One - A small lumberjack camp not far from the primary site. No permanent residents. Various colonists take it in turns to travel out to the site and live and work for a few weeks, felling trees and stripping them of their branches and bark before they're carried back to the main settlement's sawmill.
Rancho Apocalypse (The site previously known as Gamma Two) - Located eight hundred miles south of Gamma Prime in the planet's tropical zone, this site consists of a single homestead. Eleven adults and three children live here. The purpose of the site is to catalog more of the planet's (tropical) flora and fauna and to experiment with growing coffee, cacao and poppy plants so that eventually the colony will be able to produce coffee, chocolate and morphine for itself.