From the Introduction:
Imagine a world roughly three decades into the future. Technology has advanced far beyond its boundaries and is now imbedded into the human flesh and mind. The providers of this technology, the megacorporations, are controlling everything, including the humans who crave for their merchandise. The government has no real power in this technological world, for they provide nothing of interest to the population. Most cities have combined into large sprawls - giant filthy monsters of stone and steel providing a home for humanity. Crime rates are higher then ever - drug addicts crawl the sprawl's sewers while cybernized gang members roam the streets.
The World of 2031 provides the setting for the Darker Days roleplaying game. It is presented in five main sections: an introduction, "A Brief History", "The Mercs", "The 2031 Society", and "Corporations".