The Complex
The Complex adds a Backrooms-style dimension to Minecraft, inspired by the Kane Parsons Backrooms and Pixels series, populated with rare entities and monsters.
What it does
The Complex brings a dimension of endless yellow halls, drawn from the Backrooms creepypasta and the Kane Parsons video series, into a Forge 1.20.1 world. Players enter the space and explore it while rare entities roam the halls. Some of the creatures are based on monsters from the movies, and the dimension includes a pirate and a large still life painting that act as chasers.
Several monsters in the mod cannot spawn naturally in survival, so they appear only through the dimension's own layout. Captain Clark, a large pirate, chases the player until the player dies. The still life, a decorative painting, usually turns the lamp off when it is near. Installation covers the server and each player's game. Files are published for Forge only, for 1.20.1, under the MIT License; the project is not open source.
Key features
Yellow halls dimension
A dimension of yellow halls based on the Backrooms setting, with rooms that look and feel like the source material.
Rare entities
New rare entities inhabit the halls, each with its own behavior and appearance.
Movie-inspired monsters
Some monsters draw on creatures from horror films and are found only inside the Complex dimension.
Pirate and still life chasers
Captain Clark, a large pirate, and a still life painting pursue the player, and neither spawns naturally in survival.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Horror survival maps
Map makers can use the dimension as a dangerous zone that players must cross or escape from.
Backrooms-themed servers
Servers built around the Backrooms setting can add the dimension for players who want its entities and halls.
Who it’s for: Players who enjoy horror exploration and the Backrooms setting, and server owners who run horror-themed worlds on Forge 1.20.1.
Questions
Does The Complex need to be installed on the server?
Which loader and version does The Complex support?
Can the chasers spawn naturally in survival?
In the catalog
The Complex is one of 11,058 Mobs mods on ModsFinder, and one of 6,527 Mobs mods for Forge. 34,764 mods support Minecraft 1.20.1.
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Official listing
- Modrinth page
- modrinth.com/mod/the_complex
- Owner
- SubterodanWorkspace
- Published
- 2026-08-15
- Updated on Modrinth
- 2026-09-05
- Facts verified
- 2026-10-15