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The Backrooms Project Delta

Modpack

by 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!

Level List (Spoiler if you want the levels to be a mystery)

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

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External Resources