Reddit user Lycerius posted about his decade-long game of Civilization II, in the year 3991. Only three factions remain: the Americans, the Vikings and the Celtic, earth is a nuclear wasteland, humanity is malnourished and harrowed by the ravages of war, and perpetual conflict plagues the land along territorial boundaries.
This is simply one of the coolest stories I have come across in a long time, in part because I feel that with ever-dwindling resources, it may actually be a bleak window into the future. Nearly 200 thousand years from now, when we have drilled the last oil, and harvested the last mineral veins, and burnt the last coals, and wildlife, forests and related professions like ranging and agriculture are dead, what will we do then? Will we look to the stars for our salvation? Will we mine the Moon, or other planets and their satellites? Or, and this is highly unlikely, we realize early on that we are being colossal idiots with our finite resources, that we need to conserve and preserve, and be more prudent with our fuel efficiencies and resource management.