History ApocalypseHow / Class0

** [[spoiler: During the credits, the infected are shown escaping into Paris, suggesting that we may have moved into a Class 1. Or at least a much larger scale Class 0 (The whole of Europe).]]

* The {{Genesis}} song "The Last Domino".

* The shockwaves created by the [[spoiler: titular character]] in ''{{Akira}}''. One takes out the center of Tokyo. [[spoiler: Then it happens again.]]

* In an alternate timeline in ''DoctorWho'''s "Turn Left" where the Doctor dies in the early 21st century, a nuclear storm drive ship called ''Titanic'' hits London, wiping out the entire city and locking out any immigration to and from the UK. The ship itself easily had the potential to be on the scale of Class 5 or 6, so it's assumed that the disaster was actually mostly averted. Later, over 50 million Americans are forcibly turned into creatures made of fat called Adipose, killing the humans they were made from.

* Although the only death from the Fukushima "incident" was caused by falling debris.

* ''ZForZachariah'' is a Class 2, possibly borderline Class 3. Nuclear war and [[DeadlyGas nerve gas]] have wiped out seemingly everyone outside a small valley, leaving one survivor who doesn't see another person for a year. He tells her she's the first living person he's met since the bombs went off, and that the valley is the only place he's found that isn't a wasteland. Whether or not there are more such isolated, unaffected areas is unknown [[spoiler:but the protagonist goes in search of one at the end of the book, to escape her [[SanitySlippage unstable]] companion.]]

* In ''PuellaMagiMadokaMagica'', this is what happens [[spoiler:in the aftermath of most of Homura's timelines as a result of Walpurgis Night's rampage through Mitakihara Town before being defeated]].

* ''TalesOfMonkeyIsland'': [[spoiler:The Gulf of Melange in Chapter 5, right between this class and Class 1, and bordering on Class 3A. And it seems that the Caribbean just isn't pretty much the same since [[BigBad LeChuck]] regained his voodoo powers and [[HeroKiller killed Guybrush]].]]

* ''Tales of Monkey Island'': [[spoiler:The Gulf of Melange in Chapter 5, right between this class and Class 1, and bordering on Class 3A. And it seems that the Caribbean just isn't pretty much the same since [[BigBad LeChuck]] regained his voodoo powers and [[HeroKiller killed Guybrush]].]]

* The decline of Mayan civilization during the 8th and 9th centuries probably count as this.

* Sergej Luk'yanenko's ''Линия Грёз'', as set in the MasterOfOrion universe, features several varieties of planet-scale destruction. As most races in the conflict span over multiple systems, those attacks are class 0. This might of course instantly move up to class 5 or 6 if the species in question has been reduced to inhabiting only one planet (usually their native one) or the attacks are directed against all planets inhabited by the fraction simultaneously. Luk'yanenko avoids the topic of pre-space age species; in the games it's possible to find native sentient life on generally life-friendly planets. Wiping those aboriginies out is discouraged, though, as they turn into an agricultural boon for the race to settle on the planet. Examples of destruction:

* The backstory of ''FinalFantasyTactics'' indicates that at some point after ''FinalFantasyXII'', a huge castrophe hit Ivalice and destroyed the entire political structure, several races (like Moogles), and most of the advanced technology, like Airships. Its never said if it also hit the rest of the unnamed world where Ivalice is located, so this may actually be a Class 2.

* In [[Left4Dead Left 4 Dead and Left 4 Dead 2]], the entire East Coast United States, from New York to Louisiana, has been lost to the rapidly spreading [[TheVirus mutated rabies virus]], turning people into bloodthirsy animals who's [[UnstoppableRage extreme pent up rage]] and [[TooDumbToLive severe loss of mental functions]] leave them in a zombie like state. So far, the [[GovernmentAgencyOfFiction Civil Emergency Defense Agency]] has been useless to stop the spread, leaving the [[YanksWithTanks US Military]] to [[TimeForPlanB take over]] with a more [[ViolenceIsTheOnlyOption violent]] and [[ArmiesAreEvil potentially genocidal]] approach (includes [[KillEmAll slaughtering entire groups of citizens]] because one or two ''might'' be infected).

* The [[http://en.wikipedia.org/wiki/2011_T%C5%8Dhoku_earthquake_and_tsunami 2011 Tohaku Earthquake and Tsunami]] in Japan. The entire Sendai Region leveled as well as a nuclear incident in Fukushima's Fukushima I power plant.

* The Mongol invasions. Genghis Khan wiped out, in succession, nearly the entire populations of everything between China and Iran, much of the Middle East, and nearly all great cities of Eastern Europe. Given that Europe was in its Dark Ages, this was nearly a class 1 for civilization as a whole. Only Constantinople survived, after a Byzantine surrender.
* The [[http://en.wikipedia.org/wiki/2011_T%C5%8Dhoku_earthquake_and_tsunami 2011 Tohaku Earthquake and Tsunami]] in Japan. The entire Sendai Region leveled as well as a nuclear incident in Fukushima's Fukushima I power plant.

* The Mongol invasions. Genghis Khan wiped out, in succession, nearly the entire populations of everything between China and Iran, much of the Middle East, and nearly all great cities of Eastern Europe. Given that Europe was in its Dark Ages, this was nearly a class 1 for civilization as a whole. Only Constantinople survived, after a Byzantine surrender.

** As yet, the tally for Japan's quake and tsunami isn't as high, but rising. Even with fewer deaths, the devestation and possible radiation hazards have emptied out areas that were quite well-populated previously.

** As yet, the tally for Japan's quake and tsunami isn't as high, but rising.

* ''{{28 Days Later}}'', which sees the complete destruction of Great Britain by a mutant virus -- in fact, it's implied that Britain was deliberately quarantined (and lied to about the extent of the disaster) because it's an island and at least TheVirus could be contained there.
* The sequel, ''{{28 Weeks Later}}'', shows the reestablishment of a small community of merely 15,000 people in London and its destruction.

* ''[=~28 Days Later~=]'', which sees the complete destruction of Great Britain by a mutant virus -- in fact, it's implied that Britain was deliberately quarantined (and lied to about the extent of the disaster) because it's an island and at least TheVirus could be contained there.
* The sequel, ''[=~28 Weeks Later~=]'', shows the reestablishment of a small community of merely 15,000 people in London and its destruction.