Liminal Spaces

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A Liminal Space (sometimes shortened to limspace) is a type of Locational Dimension that express Liminal Properties, and may greatly vary when it comes to Size, Danger and Habitability. Most Liminal Spaces are infiniteThough "bounded" Limspaces aren't unheared of., non-euclidean environments which often invoke feelings of uncanny familiarity, eeriness, nostalgia, and apprehension upon those who end up within them. The laws of physics and nature cannot be relied on within Liminal-Spaces - despite the increasing number of Human settlements. 
A common theme of Liminal Spaces is an 'abandoned' or empty caricature of a familiar place or environment, often being transitional in some form, such as hallways, waiting rooms, parking lots and rest stops. While this definition is the most common type of environment present in Liminal Spaces, it should be noted that Many Liminal Spaces also take the form of places that are simply nostalgic, dreamlike, and/or uncanny, with the absence of people becoming their only unifying trait (Except in constructed settlements).
Liminal Spaces often are deeply connected and intertwined with a specific baseline reality, allowing both accidental and intentional access to them. Due to this many have over time been colonised by extradimensionalIn the perspective of the Liminal Spaces
 species. Most Liminal Spaces do not have entirely native species, instead overtime mutated and evolved iterations of those who have ended up there.
===Types of Liminal Spaces===
*Liminal Systems: Liminal Spaces often can connect and amalgamate together into what is known as a Liminal System or Cluster. These Systems can be composed of hundreds or even thousands of Liminal Spaces.
*Sub-SpacesAlso known as "Levels" or "System Spaces": A "full" Liminal Space that is part of a Liminal System. A common colloquial term for such a dimension is the term 'Level'.
**Enigmatic Sub-Spaces: More difficult to access, and much more mysterious Sub-Spaces. Many of these lack an ordinal placement within their systems, instead having unknown positions.
*Transitional SpacesAlso known as "Middle Rooms" or "Thresholds": A Liminal Space which is located in a intermediary position between Reality and a Liminal System, or a Limspace otherwise also connected to Reality. These often allow transport between Reality and a Liminal System, although this is not necessarily the case. These may also take the form of a location in reality with liminal properties, often acting as a gateway for transport between reality and liminal systems.
* Semi-Transitional Spaces: A unique variant of Transitional Space that has 2 different types, these being the "System-Type" and "Baseline-Type".
**System-Type: System-Type Semi-Transitional spaces physically exist in reality, but can only be accessed via full transitional or liminal spaces.
** Baseline-Type: Baseline-Type Semi-Transitional spaces are locations in reality with liminal properties, acting much like a pocket dimension. They don't necessarily lead to a liminal space/system. (but they can in some cases.) 
*Intra-SpacesAlso known as "Sub-Levels": Distinct Limspaces that are related or connected to a larger parent level. They may either directly part of their parent level or still connected while existing in a separate space. These are usually naturally created, but some circumstances or methods have allowed the creation of new Intra-Spaces.
*Inter-SpacesAlso known as "Sub-Layers".: Limspaces located between two separate Limspaces. In some cases they may act as a 'bridge' between the two Sub-Spaces.
*Micro-SpacesAlso known as "Rooms": Typically distinct locations that are too small to be considered their own level.
==How are Liminal spaces Created?==
Liminal spaces are 'corrupted' timelines which often manifest in strange and unusual forms based out of the nostalgia and memories of those who inhabit them. Their laws of physics often contrast with what you would consider normal. Most known Liminal Spaces are either created by as of now unknown events leading to their Castrovalence rising above 1, which is catastrophic for the integrity of spacetime leading to a big-crunch like event. This event transforms a timeline subject to this event into a Liminal Space.
In some more enigmatic cases the dimensional collapse events has not clearly happened, instead a pocket dimension may be formed via unknown means. The phenomenon of Liminal Spaces taking the form based off of the collective nostalgia of the area it is entered from is present regardless of the method of creation. Most "Nostalgia-Based" theories attribute Liminal Spaces as an intermediary between Reality/Existence and Unreality/Non-Existence, with the most notable example of such a Liminal System being The Backrooms, which seemingly inhabits the aforementioned "space" in the multiverse.
==Backrooms System ==
Designation: Limsystem-001
The Backrooms is the largest known Liminal System to be discovered thus far. Rather than as a Liminal Space, it is much better known as a series of enigmatic sub-dimensions where people from anywhere in the multiverse can end up, provided they noclip out of "reality". 
The Backrooms can be accessed via any location in the multiverse, although the location within the Backrooms which each location in reality leads to can differ, fitting the memories of the natives of whatever area enters. For Humans, it takes the form of nostalgic urban rooms and environments for the most part. Some of the more unusual areas may be ones generated out of the nostalgia of distant alien races. 
In modern times methods of reliably creating permanent two-way entrances have been discovered and developed, making accessing the Backrooms fairly easy. Thus, some more adventurous individuals have intentionally used such gateways to enter the Backrooms to explore it temporarily or to permanently move into it. Despite this, a majority of the people within the Backrooms are stillAll people who entered it before the invention of gateways entered it via this method. people who ended up there by complete accident by accidentally falling out of reality into the Backrooms. 
===Sub-Spaces===
While in the modern academic circle these are known as "Sub-Spaces", many of the inhabitants of the Backrooms colloquially call the various realms that make up their dimension "levels". Level is the archaic term for a Limspace part of the Backrooms System. This name was created before extensive scientific understanding of the nature of Liminal Spaces and their multiple instances separate from the Backrooms due to its distinct nature as being the first to ever be discovered.
The 'levels' are typically divided by a door, floor, or can only be accessed from no-clipping. They collectively make up the Backrooms and house all things within the system. It is not entirely understood how the levels are 'positioned' in relation to one another, though studies into the subject are ongoing.
=====List of Sub-Spaces=====
*Blue Dreams
*Crush Depth
*Decrepit Hospital
*Heaven
*Inverted Reality
**Four Dimensions
*Lonely Road
*Neverending Concrete
*Neverending Staircase 
*The Chasm
*The Crooked House
* The Dark Forest
*The Dark World
*The Facility
*The Lobby
**Yellow Land 
*The Maple Forest
*The Mist
*The Sewer
=====List of Sub-Spaces (OUTDATED)=====
*Level 17 "The Edge"
*Level 17.1 "The Train"
*Level 18 "The fountain of youth"
*Level 19 "Hotel Backrooms"
*Level 20 "Hollow Iceberg"
*Level 21 "Truffle Cavern"
*Level 22 "Goliath"
*Level 23 "Gargantuans"
*Level 24 "Timeline Island"
*Level 25 "Apartment Void"
*Level 26 "The Space Ocean"
*Level 27 "Infinitopolis"
*Level 28 "The Dirt Cavern"
*Level 29 "Drowned School"
*Level 29.5 "Blue Forest"
*Level 30 "Disparity"
*Level 31 "Shipwreck"
*Level 32 "The Cruise"
*Level 33 "̧P͏ìll͢ars̛"
*Level 34 "Basalt Cavern"
*Level 35 "Walled City"
*Level 36 "The Metro"
*Level 37 "The Gateway"
* Level 39 "Dissonance"
*Level 41 "Portal Matrix"
*Level 42 "The Railway"
*Level 43 "Vertigo"
*Level 44 "Cold Islandia"
*Level 45 "The Pillars"
*Level 46 "Dead Church"
*Level 47 "Crimson Tunnels"
*Level 48 "Pylons"
*Level 49 "Swimming Pool"
*Level 50 "Creepspawn"
*Level 51 "The Lighthouses"
*Level 52 "the backroom"
*Level 53 "Folded Forest"
*Level 54 "Fractured Sea"
*Level 55 "The Forest"
*Level 56 "The Pizzaria"
*Level 57 "Flooded Basement"
*Level 58 "Flooding Cave"
*Level 59 "Construct"
*Level 60 "Isles of Blood" 
*Level 61 "Archive"
*Level 62 "Dark Cavern"
*Level 63 "Overgrown Reactor"
*Level 64 "Submarine Halls
*Level 65 "Courtyard"
*Level 66 "The Forgotten"
*Level 67 "Interconnected Asylum"
*Level 69 "French Square"
*Level 106 "Suburb street"
*Level 120 "Misty Caves" THIS LEVEL HAS BEEN REDACTED FROM THE SDSB BACKROOMS DATABASE
*Level 333 "Library of Wan Shi Tong"
*Level 420 "Winter Home"
*Level 666 "The Convention"
*Level -320410120023999212123123912399249923232.493 "In Between"
* Level -43922812245.1 "Voidzone"
*Level -43922812245.2 "Borderzone"
*Level Fun
*Party Hub
*Level Happy!
*Your Room
*Antarctica "The Fallen Continent"
*Trollge Containment Zone
*Honeycomb Insulation
*Level Joy!
*A page with nothing in it
*Level Boredom
*Level -42 "Latina Nuclear Plant"
* Level -18 "The Fountain of Death"
*Level -2 "Corrupted Passages"
*Level -1 "Brick Stairs"
*Level -0 "Flipped Reality"
* The End 
* Gardenrooms 
==The Outer Rooms System==
Designation: Limsystem-002
The Outer Rooms were a collection of several liminal spaces which existed until the MV209 event, which either destroyed them or eliminated all connections method to them.
===List of Sub-Spaces===
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*New Frontier
*Level 40 "Doorway"
*Level 38 "Damp Hallway"
==Living Rooms System==
Designation: Limsystem-003
The Living Rooms is the first safe and stable Liminal System to be discovered, with the entrance found in a mansion located east of Alephitis, Tritonien.
=====List of Sub-Spaces===== 
*The Hallways (Located within the mansion.)
*The Diner
*The Modern Lounge
*The Garden
*The Penthouse
==The Deeprooms==
Designation: Limsystem-004
In the year 209 a catastrophic event happened in the New Frontier, Damp Hallway and Doorway limspaces, which were all once part of the Backrooms. The Event, which was named "MV209" ("Multiverse '209") was caused by Fracture being completely healed, which simultaneously caused entrances to the three limspaces to stop working as intended. It is thought that they were completely, because all communications from SDSB operatives in the 3 levels cut approximately 18 minutes after the initial MV209 event. Following MV209, anyone who attempted to use the former entrances to these three levels would "Go somewhere deeper". Until the year 281, nothing was known about this "deeper" area. Until a full drone-investigation began into the area. It seems to be a system of enigmatic liminal spaces found deep down below underneath the entirety of the backrooms.
The 'Deeprooms' are completely barren of native life/entities. Despite the lack of entities there is still a constant feeling of being watched.
===List of Sub-Spaces===
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==Solitary Liminal Spaces==
Solitary Liminal Spaces are are independent and not considered part of a Liminal System. They are often isolated and solitary by nature.
===List of Solitary Liminal Spaces === 
*Realm of the Forgotten [Designation: Limspace-000]
==Entities==
The term "entity" - originally a colloquial term originating from the days before the Secure-Defend-Subjugate Backrooms - covers a wide variety of beings, from friendly, sapient inhabitants, to mindless beasts, to creatures whose motivations and abilities are beyond our understanding. Each entity has unique behaviors, inhabitats, and physiological needs, often making them very unpredictableAtleast compared to wildlife from Baseline Reality. When in doubt, it is advised to avoid disturbing them, for both your and their safety.
In general, an "Entity" can refer to anything that lives in the Backrooms.
=====List of Entities===== 
*Black Goo
*Broodling
*Crew
*Gravites
*Knowledge Gatherer
*Maintenance
*Mirages
*Neighbor 
* Nuntius 
*Purities
*The Creep 
*Trollge
*Ultor
*Wan Shi Tong
===Enigmatic Entities===
"Enigmatic Entities" are a specific sub-group of entities capable of widespread destruction or instability, often having wide-reaching implications to reality as a whole. Most enigmatic entities are dangerous and unpredictable, though a rare few are more benevolent and cooperative. Most possess unique, often 'anomalous' properties and behaviours which are yet to be understood or explained.
==Phenomena==
There are a plethora of strange, unexplainable occurrences which occur within Liminal Spaces - unexplained, unnatural occurences that are typically not fully understood. These are known for defying the laws of physics, pushing the bounds of ideas such as time and euclidean geometry, bending reality as we know it. As these phenomena can include a wide array of inexplicable events, it is advised to use caution when exploring sub-spaces that are unexplored or poorly understood.
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==Objects==
Objects are tools, weapons, consumables, or other items used or found by the inhabitants of Liminal Spaces. Many of these follow the rules of their reality, being found as mere decorations for individual Limspaces, while others are real-world objects altered by a Limspace upon entyy, and some are even created by the myirad of people who reside within Limspaces. Some may be dangerous, while others may be crucial for survival - thus identification of objects is extremely important if one wishes to make use of them.
===List of Objects===
*Brood Repellent
*Fracture Weld
*Golden Syrup
*Maple Syrup
*Noclipper
*Rift Projector
==Groups==
Countless organizations or groups have forged their existence in a myriad of liminal spaces. Groups have their particular objectives and justifications for which they are developed. Factions, groups, and organizations can be varied, including varieties such as; task groups, command groups, religious groups, and many others.
===List of Groups===
See Main Page
Category:Backrooms
Category:Liminal Spaces
Category:Dimensions and Timelines
Category:Locations
Category:Guides
Category:Lore
Category:Yata Explained