The Backrooms Project Delta
Modpackby Voxels
Minecraft: The Backrooms Project Delta is a map in a modpack that takes place in The Backrooms as you play as a character named James Rider.
Type
Modpack
CurseForge Downloads
672
CurseForge ID
1498202
Last Updated
May 14, 2026
Description
NOTES: This map is ONLY for 1.21.1 and can ONLY be played in the modpack! Also, this map is ONLY for singleplayer! Sorry for that, there will be lots of bugs if played in multiplayer.
Known bugs: If you have missing textures in your game, try leaving and rejoining the map. If they are still there, stop the instance and restart it. If you spot any more bugs, please comment them in the comments section of this PMC page, or on my YouTube. Also, feel free to suggest ideas, updates, and more! Thanks!
About the map:
This map was supposed to be the biggest Backrooms map ever. But that didn't happen. It's still big though!
This map also is in a modpack. Why? Well, I wanted to add mods. And I added to much that I had to make it a modpack. The mods mostly are furniture and block mods. No entites or stuff like that.
You will play as a scientist named James Rider. James wanted to figure out why people were disappearing all the time. One moment they're walking down the street, the next they're gone. Those people where never found, so you wanted to find them. You named the project Project: Delta. Then one day, at home while you were working on some documents, you tripped and noclipped into The Backrooms. A place you only heard about when you were a kid, now you learn its real — it was all real.
Recommended PC specs: This map was TESTED on a low-end PC (well in my opinion its low-end) with a GTX 1050 ti, Intel Core i7 6700, 16Gb DDR4.
You should have something near those specs. You may experience lag spikes sometimes, but maybe just tweak your settings.,
The packs RAM is set to 8GB, if you have less (like 4GB) you can try to lower it, this map was sadly not tested using 4GB YET. I will get on that soon.
Map Features:
This map has a ton of features! Some of them are epic, some you may never find. Let's list some of them!
- Explore over 40 levels all with unique mechanics and builds
- Fight (and find) unique entities like Skinstealers, Hounds, Smilers, and more all made using commands!
- Trade with villagers renamed as Wanderers.
- Find fun NPCs around some levels you can talk to, and some you can trade with!
- Custom items
- Achievements (ten right now)
- Ambiences in almost every level
- custom, original levels (only two right now but whatever)
And tons more YOU will have to discover!
Positive Levels:
Level 0: Tutorial level
Level 1: Habitable Zone
Level 2: Pipe Dreams
Level 3: Electrical Station
Level 4: Abandoned Office
Level 5: Terror Hotel
Level 6: Lights Out
Level 7: Thalassophobia
Level 8: Cave Systems
Level 9: The Suburbs
Level 10: Bumper Crop
Level 11: The City That Never Sleeps
Level 13: The Infinite Apartments
Level 14: Paradise
Level 15: Futuristic Halls
Level 17: Abandoned Carrier
Level 18: Nostalgic Memories
Level 19: The Attic
Level 20: The Warehouse
Level 21: Numbered Doors
Level 22: Polluted Ruins
Level 25: Out Of Order
Level 27: Ligneous Desolation
Level 31: Roller Rink
Level 33: Dead Mall
Level 34: The Sewers
Level 36: Desolate Terminal
Level 37: Sublimity
Level 37 Sublevels NEW!!! Level 37.1: The Deep End
NEW!!! Level 37.3: The Bathhouse Complex - ORIGINAL LEVEL
NEW!!! Level 37.6: True Eternity
Level 41: The Black Lake
Level 46: Arabian Desert
Level 50: The Moribund Highway
Level 56: Frostbite
Level 57: Diurnal Art Gallery
Level 69: The Road Trip of Affliction
Level 75: The Sandrooms (Really called Liminality)
Level 94: Motion
Level 108: Spire Complex
Level 119: Average Waterpark...?
Level 130: Tainted Pools
Level 188: Courtyard Of Windows
Level 283: Interconnected Playgrounds
Level 678: Infinite Ducts
Level 974: Kitty's House
Level 3999: The True End
Level 9223372036854775807: An Endless Ending
Enigmatic Levels:
Level Fun :)
The Hub
The End
The Hive
Level ! (Run For Your Life)
You Cheated
Original Levels:
Level DREAM
Level 0.0101010
NEW!!! Level 37.3: The Bathhouse Complex
(NOTE: Currently, there are not negative levels or any other sublevels.)
More updates will be coming! I already got some planned.... :)
(Also super thanks to ChessyChess and K3melow for ideas and inspiration.)
Screenshots
Similar Modpacks
Boku no SMP
A My Hero Academia Modpack
Shared Survival
Shared Survival: shared health, hunger, and inventory, with proximity chat to make everything just a bit crazier.
Vanilla Modded (Tekkit 3)
Step into the era of technology and industrialization with Tekkit 1.19.2.
Create: Gearworks
A modpack made to keep the focus on using the Create mod central to everything you do while providing a lightweight and...
Dino Island
An island with dinosaurs
Ultra Dragon Block Pack
A Dragon Block C modpack, with a lot of stuff