Sub-levels are located between two certain levels of the Backrooms. Below, there are listed all the known ones. Feel free to add more.
Normal Sub-Levels
Level 0 “The Lobby”
- Level 0.032 “House Of Rooms”
- Level 0.1 “Danger Zone”
- Level 0.2 "Remodeled Mess"
- Level 0.22 "Fully Remodelled"
- Level 0.3 "Mischief Mansion"
- Level 0.4 “The Crimson Tunnels”
- Level 0.5 “The Cubed Space”
- Level 0.6 “Hotel 0.6”
- Level 0.7 “Claustrophobia”
- Level 0.9 “The Maintenance Tunnels”
- Level 0.10 ''The Rotting Lobby''
- Level 0.22 "Fully Remodeled"
- Level 0.45 "The Big Room" (its Level 0.0 tho)
- Level 0.55 ''Future Void''
- Level 0.666 "The Burning Lobby"
- Level 0 L (The Leftrooms) "The Piano Ground"
- Level 0 R (The Rightrooms) "The Lobiy"
- Level 000.1 "Sets Of The Sky Islands"
- Level 000.2 "Repentance Room"
Level 1 “Habitable Zone”
- Level 1.001 "A Chilly House”
- Level 1.05 “The Small Hallways”
- Level 1.1 "Corrupted Corridor"
- Level 1-1 "The lost concrete"
- Level 1.2 “The Abandoned Mansion”
- Level 1.3 “The Core”
- Level 1.4 "Hallways Of Hallways(real name is unknown)"
- Level 1.5 “Decidophobia”
- Level 1.7 “Trashed Forest”
- Level 1.8 "Supermarket of Reality"
- Level 1.9 ''Something Is Wrong(real name is unknown)''
- Level 1 L (The Leftrooms) "Narrow"
- Level 1 R (The Rightrooms) "Habitable Park"
Level 2 “Pipe Dreams”
- Level 2.4 “Gated Corridors”
- Level 2.6 “The Wooden Tunnels”
- Level 2.75 “Apeiro Vestibules”
- Level 2 L (The Leftrooms) "The Hallway Of The Collections"
- Level 2 R (The Rightrooms) "Tunnel Made up Of Pipes"
Level 4 “Abandoned Office”
- Level 4.04: "Unrecognizable Offices"
- Level 4.3 "Liminal Offices"
- Level 4.5 “Whispering Halls”
- Level 4.6 "The Infinite Offices"
- Level 4.10 “Infested Office”
- Level 4.82 "Dreadful Workplace
- Level 4 L (The Leftrooms) "Dotted Office"
- Level 4 R (The Rightrooms) "Cluttered Cubicles"
Level 5 “Terror Hotel”
- Level 5.1 "Blinding Lights"
- Level 5.2 "The Abandoned hotel"
- Level 5.7 "The Hotel Hallways"
- Level 5.11 "the storage room"
- Level 5 L (The Leftrooms) "The Motel"
- Level 5 R (The Rightrooms) "The Dormitory"
Level 6 “Lights Out”
- Level 6.05 "The Blenderrooms"
- Level 6.1 “The Snackrooms”
- Level 6.2 “The Thrift Store”
- Level 6.3 “The Gun Store”
- Level 6.5 "Flooded Warehouse"
- Level 6.66 “Cutting Deeper”
- Level 6 R (The Rightrooms) "Hypermarket Hell"
Level 7 “Thalassaphobia”
- Level 7.3 "Flooded Bunker"
- Level 7.5 “Screen Saver”
- Level 7.7 “Buzzing Beehives”
- Level 7.𝘓 “Opposite Oceans”
- Level 7.8 "The Gleaming Barn"
Level 8 “Cave System”
- Level 8.3, "Gemstone Cave"
- Level 8.6 "Martian Caves"
- Christmas Caves
Level 9 “Darkened Suburbs”
- Level 9.1 “Snow Suburbs”
- Level 9.3 “Lost Apartments”
- Level 9.4 ”Lavender Puzzle”
- Level 9.5 “Foggy Forest”
- Level 9.6 "The Bloodred Sky"
- Level 9.7 "Good Night"
- Level 9.8 "Happy Terror"
- Level 9.9 "The End of The Road"
Level 10 “Infinite Field Of Wheat”
- Level 10.1 “The Breakroom”
- Level 10.2 "Beautiful Field at Night"
- Level 10.3 "A Field of Corpses"
Level 11 “The Infinite City"
- Level 11.1 "The Aesthetic City"
- Level 11.2 "Brightly Lit City"
- Level 11.3 "Graffiti Street"
- Level 11.6 “Infinite Parking Garage”
- Level 11.111111111111111 “Remodeled City"
Level 12 "Matrix"
Level 13 “The Apartments"
- Level 13.2 "Boundless Apartment"
- Level 13.13 ''Halls of El Dorado''
Level 14 "Military Hospital"
- Level 14.6 "Beyond Repair"
Level 15 “Futuristic Halls”
- A sub-level was removed. Please make a new one.
Level 16 "Unnamed Level"
- Level 16.5 ''The Missing Institute”
Level 17 “The Cargo Ship”
- A sub-level was removed. Please make a new one.
Level 18 “Memories”
- Level 18.3 “The Woodlands”
Level 19 "The Attic"
- Level 19.2 "The Basement"
Level 36 “The Airport”
- Level 36.5 “The Plane”
Level 37 "Welcome To The Jungle"
- Level 37.3 "Forest Luxury"
Level 41 “Detention Halls”
- Level 41.1 "The Room"
Level 44 “The Alternate Reality”
- Level 44.5 “The Exhibits”
Level 46 “The Infinite Desert”
- A sub-level was removed. Please make a new one.
Level 124 "The Purplerooms"
- Level 124.1 "The Dreamzone"
Level 188 "The Windows"
- Level 188.1 "The Unexistent Layer"
- Level 188.2 "Windows of Darkness"
Level 189 "Public Bathroom Terror"
- Level 189.1 "The BathHalls"
Level 312 “Gloomy Gateways”
- Level 312.8 “Gentle Sandstorm”
Level 365 "Bowling"
- A sub-level was removed. Please make a new one.
Level 375 “TOTALLY Normal Restaurant”
- Level 375.01 “The Security Room”
Level 408 “Mirror, Mirror”
- A sub-level was removed. Please make a new one.
Level 679 "The Dark City"
- Level 679.2 "The Infinite House"
Level 777 “The Jugdement Day”
- Level 777.5 “Event Town”
- Level 777.9 “The Luxury Trip”
Level 837 "Fake"
- Level 837.2 "Wacky Wonder"
Level 858 "The Infinite Aquarium”
- Level 858.1 “The Abandoned Aquarium”
Level 1000 "The Campground"
- Level 1000.1 "Almond Lobby"
Level 1045 "Latinoamerica"
- A sub-level was removed. Please make a new one.
Level 1065 “Claustrophobic Bathroom”
- Level 1065.1 "Alternative Frontroom"
Level 1205 "The Purple Space?"
- Level 1205.2 "The Purple-Poolrooms"
Level 1472 “Void Maze”
- Level 1472.1 "Balance Yourself"
Level 2508 "Make us whole"
Level 3999 "True Ending"
- Level 3999.5 "Once a home"
Level 8999 "Desolate Shopping Mall"
- Level 8999.1 "The Park Outside the Mall"
Level ! "Run For Your Life!"
- Level 876786.9134 ''Your favorite place''
Negative Sub-Levels
Level -0 “Untextured”
- Level -0.2 “When You Look In The Mirror”
- Level -0.12 “The Secrets That Don't Leave”
Level -000 "Level -000"
- Level -000.1 ''The Mallrooms''
Level -1 “Glitched Halls”
- Level -1.1 "Doorways"
- Level -1.5 ''The Waters"
Level -2 “Overflow”
- Level -2,1 "Hotel Freedom"
- Level -2.5 “Main Gateway”
Level -4 "Carbon Tunnels"
- Level -4.1 "Under Maintenance"
- Level -4.2 "The Forest"
- Level -4.6 "Cardboard Box Maze"
Level -6 “Mystery Mines”
- Level -6.3 “The Fallenrooms”
- Level -6.4 “Paradise...?”
- Level -6.5 “The Super Snackrooms”
Level -9 "Unnamed Level"
- Level -9.1 ''Unnamed Sub-level"
Level -11 "The Mind-games Room"
- Level -11.11 ''Unnamed Sub-level''
Level -33 "Lukewarm Hotel"
- Level -33.1 "The Poolrooms"
Anomalous Sub-Levels
Level ' “Liminal Neighborhood”
- Level '.1 “Dangerous Place”
- Level '.2 “The Backstreet of Many Stories”
- Level '.3 “Corrupted Neighborhood”
- Level '.4 “Running is the only way”
Level ! "Run For Your Life!"
Level SYNTAX ERROR "The Test Level" (Level 40404)
- Level SYNTAX ERROR.1 "HTTP 404 NOT FOUND ERROR" (Level 40404.1)
- Level SYNTAX ERROR.2 "Non-Euclidean Deathzone" (Level 40404.2)
Level [Uncategorized] ""
- Level ?.0 "Maze of Vents"
Make your own backrooms level using this Template.