The official Firaxis account has posted a video about the “eternal war”. This is about a game in Civilization 2, where the player played beyond the year 3000, with a 1700 long war. The ice caps melted due to the nuclear weapons and the world turned into a swamp. Sid himself explains that Civ is not a world simulator, that we are not doomed, and that every Civ game can have a new outcome. If you want to discuss this video with us, then check here, and you can find out more about the original game here.