existential risk to civilization theme

A civilization on a planetary scale (notably Earth) or beyond comes into jeopardy. This can mean the civilization is outright obliterated or something happens that makes it unable to progress.

12 total · 1 choice · 9 major · 2 minor

StoryLevelMotivation
movie: The Terror Within (1989) choice The story is set in a near future where a biological agent has left 99% of the world population dead.
movie: City of Ember (2008) major The story is set some untold generations after the survivors of an unspecified global catastrophe inhabit the titular dank and crumbling underground city.
movie: Decoys 2: The Second Seduction (2007) major It turned out that the aliens had come to Earth seeking breeding stock because their species was about to go extinct. No reason for why the aliens were in trouble was ever revealed.
movie: Donnie Darko (2001) major Central to the plot was Donnie becoming convinced that the end of the world was nigh. How exactly the world would end was unclear.
movie: Last Woman on Earth (1960) major All animal life on Earth, save for three people who were diving under the sea, appeared to have suffocated to death after all the oxygen disappeared from the atmosphere. It was unclear whether or not the de-oxygenation event was caused by humans or was an act of God. But plants soon thereafter began to replenish the atmosphere with oxygen so that the three survivors could breath again.
movie: Malevil (1981) major A group of villagers were left to do their best to survive after a gigantic explosion left everything in utter desolation. Whether the explosion was the result of a deliberate human action, an accident, or even of natural origin was never revealed.
movie: Not of This Earth (1988) major The Davanna extraterrestrials were all going to perish unless they managed to secure a new source of blood which they needed to sustain themselves.
movie: The Illustrated Man (1969) major Every adult on Earth has had the same vision of the Earth ending that night in the "The Last Night of the World" subplot.
movie: The Island (2005) major The residents of the isolated compound were led to believe that the outside world has become too contaminated to support life with the exception of a single island.
movie: Thor: The Dark World (2013) major The Dark Elf Malekith sought to unleash a weapon known as the Aether on the Nine Realms. If successful, the said realms, including the realm containing Earth, would have been annihilated.