Every SCP End Of World Scenario Explained

The SCP Foundation has a massive classification system for documenting every possible way the world, or reality itself, could come to an end. These apocalyptic events, known as K-Class scenarios, range from the collapse of global civilization to the fundamental breakdown of quantum physics and carbon chemistry. Instead of a strict rulebook, this complex taxonomy is an improvised vocabulary created by thousands of authors to categorize events like alien invasions, mass extinctions, and bureaucratic failures. Some scenarios leave the Earth perfectly habitable but completely empty, while others force eternal life onto a biosphere that physically cannot handle it. Beyond physical destruction, the archive also details conceptual nightmares like global memory loss, the total cessation of humor, and the spread of aggressive memetic ideas that overwrite human consciousness. Even the Foundation's own success can trigger an apocalypse if their containment procedures lead to an Apotheosis scenario where all remaining humanity is permanently locked inside secure cells. Reality itself is often the victim, with restructuring events retroactively rewriting history so thoroughly that nobody ever realizes the timeline was changed. Ultimately, whether the threat is a self-replicating pen or a hyperreal narrative collapse, these designations prove that the Foundation is prepared to catalog everything right up to the final moment of existence. Covered in this video: Broken Masquerade, Lifted Veil, ED-K-Class Lethe Scenario, amnestics, Mercury-K-Class World of Babel, cognitohazards, antimemetics, FK-Class Broken Foundation, Global Occult Coalition, Horizon Initiative, Thorn-K-Class Extradimensional Diplomatic Breakdown, Aleph-K-Class Foundation Apotheosis, IK-Class Collapse of Global Civilization, SCP-1238, SCP-4043, SCP-6789, AK-Class Madness Scenario, SCP-571, SCP-1985, SCP-3060, JK-Class End-of-Humor Scenario, LK-Class Species Transmutation Scenario, SCP-003, SCP-3199, SK-Class Dominance Shift Scenario, SCP-1000, Bigfoot, WK-Class Mass Extinction Event, GH-0 Dead Greenhouse Scenario, SCP-2000, Omega-K-Class End-of-Death Scenario, NK-Class Grey Goo Scenario, K. Eric Drexler, Engines of Creation, SCP-505, Faber-Castell fountain pen, CC-Class Collapse of Chemistry Scenario, DK-Class Reality Invasion, SCP-5076, SCP-9993, HK-Class Deific Subjugation Scenario, SCP-3480, SCP-5099, SCP-6167, EK-Class End of Human Consciousness, SCP-338, SCP-1427, SCP-2007, MK-Class End of Human Consciousness Scenario, SCP-3125, Cosmic Starfish, VK-Class Assorted Physics Scenario, YK-Class Entropic Annihilation Scenario, heat death, QK-Class Quantum Degeneracy Scenario, UK-Class Universal Collapse Scenario, XK-Class End-of-the-World Scenario, SCP-2317, Devourer of Worlds, SCP-231, CK-Class Restructuring Scenario, SCP-140, SCP-179, SCP-3999, RK-Class Restructuring Scenario, TK-Class Causal Restructuring Event, SCP-1297, SCP-5235, SCP-5711, ZK-Class Reality Failure Scenario, SCP-319, SCP-591, ZK-Lambda-Class Cosmic Fragmentation Scenario, OK-Class Omnicanon Collapse Scenario, PK-Class Existential Pandaemonium Event #SCPFoundation #KClassScenario #BrokenMasquerade #LiftedVeil #SCPLore #SCPExplained #EndOfTheWorld #EDKClass #WorldOfBabel #BrokenFoundation #GlobalOccultCoalition #HorizonInitiative #FoundationApotheosis #IKClass #GlobalCollapse #AKClass #MemeticHazard #SCP1238 #SCP4043 #LKClass #SpeciesTransmutation #SCP3199 #SKClass #SCP1000 #Bigfoot #MassExtinction #DeadGreenhouse #SCP2000 #OmegaKClass #EndOfDeath #NKClass #GreyGoo #SCP505 #CollapseOfChemistry #DKClass #RealityInvasion #HKClass #DeificSubjugation #EKClass #MKClass #SCP3125 #CosmicStarfish #VKClass #YKClass #EntropicAnnihilation #QKClass #UKClass #UniversalCollapse #XKClass #SCP2317 #DevourerOfWorlds #SCP231 #CKClass #RestructuringScenario #TKClass #ZKClass #RealityFailure #OKClass #OmnicanonCollapse #PKClass #SCPCommunity #SCPWiki #SecureContainProtect #Anomalies #KeterClass #Extradimensional #Cognitohazard #Antimemetics