K-Class Scenario

== Original Article Before Edit: ==
===K-Class Scenario===
Among the scenario classifications, K-Class Scenario is defined as the 2nd highest threat Scenario, where a SCP of high danger breaches the facility and/or cannot be contained and is a threat and high priority of the SCP foundation to recontain/neutralize this SCP.
===XK-Class Scenario===
An XK-Class Scenario is a scenario in which an SCP of world ending properties or worse is in a unpredictable state, and it becomes top priority to the SCP foundation to contain this SCP or neutralize it, if neither of these is optional a SCP like SCP-2000 must be used as a final resort to the scenario.
==Kuroiha's User Blog on the topic of K-Classes and other __-Classes==
 The info is all from a user blog which you can view here. All information is credited to Kuroiha
Class Scenario DefinitionsThey are listed in order by how destructive/dangerous each scenario is. You may use the arrows to switch the order.
Scenario
Type
Definition
SK-Class Dominance Shift Scenario
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A change in the planet’s dominant species.
TK-Class Causal Restructuring Event
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The world or part of it is changed to a state similar to an earlier era.
GK-Class Hostile Greenhouse Scenario
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An event where plant life would severely disrupt the planet.
EK-Class Undefined Scenario
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Does not end human life, possibly destroys society, and possibly extinguishes most or all of human consciousness.
RK-Class Restructuring Scenario
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An event where standard Earth species are outperformed by non-standard lifeforms.
AE-Class Allison Eckhart Allison-Eckhart Breathability Scenario
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The Earth is fully contaminated in gaseous anomalous (or non-anomalous) substances.
BI-Class Biological Invasion Scenario
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Invasion of our planet by extraterrestrial life-forms; An alien invasion.
GH-Class Dead Greenhouse Scenario
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80% of most living organisms, more or less, has been wiped out, but the planet is still in repairable condition, and can still support life.
IK-Class Collapse-of-Global-Civilization Scenario
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Collapse/destruction of global civilization. Normally caused by natural disasters on a massive scale. (Meteor strikes, solar flares, continental shifts, etc.)
XK-Class End-of-the-World Scenario
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Destruction of the world, with little to no possibility of rebuilding and reparation.
CK-Class End-of-the-World Sccenario
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Wide-scale (or total) restructuring of the physical mass of the world; Destruction of the planet.
NK-Class End-of-the-World Scenario
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The end of the world caused by self-replicating substances.
BK-Class Undefined Scenario
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A scenario involving reality shifts.
AK-Class End-of-the-World Scenario
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End of the world via remodeling of subjective reality. <a href="#cite_note-1">[1]</a> Can also be thought of as a restructuring scenario.
ZK-0 Reality Failure
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An event in which the universe will continue to exist, just under entirely different laws.
CK-Class Restructuring Scenario
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A reconstruction of reality. May mean a significant change in history, a change in the way physical laws work, a major rewrite of reality, or possibly even all of the above.
YK-Class Entropic Annihilation Event
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An event that causes the entire universe to reverse its flow of entropy, converting the universe into a inverted entropic state, eventually resulting in the greenuction of the entire universe to an infinitely energetic singularity (An inverted <a href="http://en.wikipedia.org/wiki/Big_Bang" class="extiw" title="wikipedia:Big Bang">Big Bang</a>).
YK-Class Vacuum Decay Scenario
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A vacuum metastability event, wiping out all life and reality.
ZK-Class Reality Failure Scenario
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The destruction of one or possibly more realities. May also be used to refer to the end of all of reality itself.