History ApocalypseHow / Class5

* The "Crucible Of God" scenario in ''TabletopGame/VampireTheMasquerade''[='=]s final supplement ends in this if the [=PCs=] lose; only a handful of "living" things remain, those being vampires who have fallen into torpor now that the supply of blood is forever gone.

* This is what happens to Lore at the end of the Doomwood saga in ''AdventureQuestWorlds'' if you choose to [[spoiler:betray Artix and allow Vordred to become the Champion of Darkness, allowing him to unleash the mother of all {{Zombie Apocalypse}}s on Lore by turning all life in the world undead]].

* This appears to be the setting in the ''Shane Acker'' film ''[[{{Film/Nine}} 9]]''. The only things left? Sack people. And horrific machines.

* The Season Six finale of ''BuffyTheVampireSlayer'' deals with [[WoobieDestroyerOfWorlds Dark Willow]] attempting to burn the Earth to a cinder. [[CrowningMomentOfHeartwarming Xander talks her down with the]] PowerOfLove.

Planetary-scale Species Extension of ''all'' multicelled life. The planet may be fit for re-habitation.

* In {{Homeworld}}, several races have Atmosphere Deprivation Weapons. These have the effect of setting the atmosphere ''on fire''. If only one or two are fired, it only results in a Class 0 effect (the size of a continent) - however, it only takes a few to render the planet completely and permanently uninhabitable. It happens several times.

** The first episode of the DiscoveryChannel miniseries ''Miracle Planet'' [[http://www.youtube.com/view_play_list?p=5292774B6AC006C6 demonstrated this using an asteroid]] around 500 km in diameter (that's smaller than the diameter of the above-mentioned asteroid from ''Armageddon'') colliding with present-day Earth.

* Most scientists predict that the final mass extinction will take place as early as 600 million years because by then the warming and expanding Sun will actually raise temperatures on Earth so much that all carbon dioxide will literally be stripped from the atmosphere. When carbon dioxide levels reach a low enough level, all plants will become extinct, and consequently the loss of plants will remove all oxygen from the atmosphere as well, and combined with even faster warming, will also end all animal life.

* The SCPFoundation mentions a number of "XK class end of the world scenarios," most of which are kept vague because of [DATA EXPUNGED]. The most prominent to be described in detail, [=SCP=]-093, is one of these, possibly a borderline Class 6. [[spoiler:And we know so much about it because it already happened.]]

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** The first episode of the DiscoveryChannel miniseries ''Miracle Planet'' [[http://www.youtube.com/view_play_list?p=5292774B6AC006C6 demonstrated this using an asteroid]] around 500 km in diameter (that's smaller than the diameter of the above-mentioned asteroid from ''Armageddon'') colliding with present-day Earth.

* Considering that an {{omnicidal|Maniac}} [[EldritchAbomination dragon-thing]] [[GodOfEvil of supreme power and malevolence]] is [[TheBadGuyWins about to]] [[PlanetEater suck the world hollow]], this is the ''best''-case scenario for what [[NayTheist Defiant]] [[PlayerCharacter Ascended]] are [[SetRightWhatOnceWentWrong sent back in time]] to avert in ''{{Rift}}''. (It's quite possible, or even likely, that it's [[ApocalypseHow/{{Class6}} far]] [[ApocalypseHow/ClassX worse]] than that.)

* Lots of ways to get this in {{Master of Orion}} 2. Excessive bombing, especially with biological weapons ends like that. If you give Space Crystal a chance, it wipes your colony with Death Spores. When you fail to defend colony from [[HordeOfAlienLocusts Space Amoeba]], it devours everything... and after it finished its lunch, every planet in the system is Toxic, forever (or until '''Class X''' variant is applied). And speaking of Class X, let's not neglect the famous Stellar Converter tech, which gives you the power of an EarthShatteringKaboom in its own right. (Amusingly, you can use the Artificial Planet tech to rebuild the resulting asteroid belt into ANOTHER planet afterwards.)

* The worst case scenario in ''Armageddon'' involved this, if the asteroid "the size of Texas" would have hit, killing everything larger than bacteria (and most likely even the bacteria soon afterward, as the oceans would have boiled completely away).

* ''[[BabylonFive Babylon 5]]'' has [[spoiler:the Shadow Planet Killers]]. They are far more thorough than [[spoiler:Vorlon Planet Killers]], using thousands upon thousands of antimatter missles to reduce the entire crust of a planet to slag.

* This appears to be the setting in the [[strike:Tim Burton]] ''Shane Acker'' film ''[[{{Film/Nine}} 9]]''. The only things left? Sack people. And horrific machines.

* The [[PosleenWarSeries Posleen]] do this to themselves so often, due to uncontrolled population explosions, that they have a specific name for it.

* In ''{{Homestuck}}'' any planet that will develop Sburb will be bombarded with meteors that're teleported away from Skaia during the reckoning. These meteors start out extremely infrequent and small, but will grow in intensity and size until the players of the game are to enter The Medium. After that point, the meteors will easily wipe out any and all life on the planet. However, the game will also send Exiles from the Incipisphere, whose purpose is to recolonize the planet of the players.

* The "Crucible Of God" scenario in ''VampireTheMasquerade's'' final supplement ends in this if the [=PCs=] lose; only a handful of "living" things remain, those being vampires who have fallen into torpor now that the supply of blood is forever gone.

* One of AlanDeanFoster's ''HumanxCommonwealth'' universe novels, ''Bloodhype'', features the Vom, an EldritchAbomination of possibly extragalactic origin that travels through space by enslaving sentient species and devours all life on planets it encounters down to the last microbe. Other novels in the series upped the ante - see the X-2 and X-3 entries.

* One of AlanDeanFoster's ''HumanxCommonwealth'' universe novels, ''Bloodhype'', features the Vom, an EldritchAbomination of possibly extragalactic origin that travels through space by enslaving sentient species and devours all life on planets it encounters down to the last microbe. Of course, later novels upped the ante - see X-4 below.

* ''[[BabylonFive Babylon 5]]'' has [[spoiler:the Shadow Planet Killers]]. While they aren't as thorough as [[spoiler:the Vorlon Planet Killer]], they are far more terrifying.

* The ''DoctorWho'' episode "Planet of the Dead". The resort planet San Helios was devastated and reduced to a desert by a swarm of stingray-like aliens.