East city sees North city as the largest rival for oil supplies and launches their entire nuclear arsenal at them. The shockwave causes huge earth quakes. East city and West city are closest to Ground Zero and are hit first.
My story: The Oil resources get depleted, the core of the planet explodes because of an alien laser, and the surviving 2 cities battle for the rest of the planet, as the left half AND the right half are blown up. The remaining civilization/city creates an alliance with the aliens, and they save the human race from the attacks of other alien races.
Then 100 years later the alien race comes back for revenge and blows all the cities up and rules the planet!
My story: The planet runs on Exotic matter recently after the cities teamed up and raided an alien planet for their fuel. A few years later the north city becomes greedy and blows up the helpless west city for their fuel and land. West city then becomes angry and destories north/west city and shares the land and fuel with the south. East however becomes nervous and blows up south and rules the planet.
My story: Aliens find the planet, and think it is a threat to their empiire. They launch a bomb to destroy it. 1000000 years later, civilisation has reset, and people find relics of the previous civilisation, and the relics of the bomb
My story: The north city attacks the west city as an effort to take control of their oil rigs, they nuke the city with duet, but this causes a major colapse of the mines and causes the oil to be burnt and the planet to colapse upon it self, in the end, the east city survives with minimium damage but eventualy dies of water posioning, due to oil leaking into their water supply
my story: the west city sacrifices one of his building for getting some amounts of oil. then, the south city attacks the north city by adding a bomb below the city. the north city exploded and spewing shards everywhere, destroying the east city and exploded the west city's oils. the south city remains, even the oil exploded.
this game is dying, only FP gets attention now
my story is that the west city discovered freeze powder, then planted a little in each of the water sources of all the cities, but the south city, which was the last of the cities to have a drought, fled, and used their freeze powder and water, and poured it onto the whole world, leaving it cold and lifeless, in the hope that they might come back and use the remaining oil