Welcome to the Portal Page for the 1983: Doomsday ATL. This timeline explores world history after Doomsday - September 26th, 1983. A worldwide nuclear exchange caused by a minor incident obliterates much of human civilization. The First and Second Worlds have only a few survivors - leaving the Third World to dominate the postwar era. This ATL covers everything from the direct aftermath up to the present world situation. 1983: Doomsday is one of the largest and longest-running collaborative timel