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Backrooms Bounded

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Backrooms Bounded

By MultifruitOwner

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It remembers you, it sees you, and it follows you.

Mod Loaders
Minecraft
Shockbyte server hosting: 35% off your first server with code MODDEX35 (opens in a new tab)

About

Description

Backrooms Bounded

Backrooms Bounded is a psychological horror mod for Fabric 1.21.1, heavily inspired by the Backrooms by Kane Pixels (Kane Parsons).

Trailer

NOTICE: BE CAREFUL WHEN DOWNLOADING BACKROOMS BOUNDED MOD THROUGH MODRINTH LAUNCHER AS IT COULD DOWNLOAD FORGE GECKOLIB INSTEAD OF FABRIC VERSION OF GECKOLIB, CAUSING MINECRAFT TO CRASH

Features

Procedural Backrooms

Everything is procedurally generated:

  • Endless interconnected hallways
  • Offices
  • Multiple floor levels
  • Decaying and infected wallpaper
  • Flickering lights
  • Lockers
  • Bacterial growths spreading throughout the complex
  • Randomly generated loot in barrels (works with other mods too)

Panic System

Spending time in darkness and isolation slowly raises your panic level. As panic increases, so do the psychological effects, making survival increasingly difficult.

  • Heartbeat sounds at high panic
  • Visual disturbances
  • Random panic effects at extreme levels
  • Panic affects how entities detect you

Survival

  • Armor becomes less reliable over time
  • Resources must be scavenged from the environment
  • Every decision can attract unwanted entities
  • Hiding in lockers may work for some time
  • Sneaking on wool/moss makes you harder to detect
  • When in the office biome, don't quit your work

Organic Infection

Bacterial growths spread across walls, floors, and ceilings. These organisms slowly corrupt nearby blocks and seem connected to whatever lurks within the Backrooms.

  • Bacteria shrooms that detect noise
  • Bacteria vines that spread across surfaces
  • 3 strikes from shrooms alerts the bacterium

Soundscape

Backrooms Bounded includes a collection of ambient sounds and environmental audio.

Expect:

  • Distant ambient noises
  • Unsettling atmosphere
  • Dynamic panic effects
  • Entity audio cues

Headphones are highly recommended.

Entering the Backrooms

The methods of entering and escaping the Backrooms are intentionally left undisclosed to preserve discovery.

(Hint: Every entry and exit chance is configurable)

Entities

The Bacterium

A mysterious entity roams the Backrooms.

The longer you survive, the more dangerous it becomes.

⚠ Spoiler: Bacterium Behavior
  • Uses multiple methods to track players
  • Reacts to sound and environmental disturbances
  • Can stalk, observe, and ambush its targets
  • Adapts to player behavior
  • Learns new interactions over time
  • Can be distracted by thrown projectiles
  • Checks lockers
  • Struggles to hear players sneaking on wool/moss

The Mimic

Not every figure wandering the Backrooms is what it appears to be.

Trust becomes a dangerous thing.

⚠ Spoiler: Mimic Information

The Mimic can disguise itself as a player. Depending on your behavior, it may act as a companion, observe from a distance, or become hostile.

  • Responds to player commands (sometimes)
  • Can follow, stay, pick up items, open blocks (sometimes)
  • Becomes aggressive if provoked

Corpses

Four types of corrupted corpses roam different dimensions. Each has unique behaviors, detection methods, and interactions. Some remain dormant until disturbed. Others are always active.

⚠ Spoiler: Corpse Information

Villager Corpse:

  • Spawns in backrooms (outside of office rings)
  • 3-hit system to destroy dormant corpse
  • Relies on sound and smell
  • Screams to alert the bacterium
  • Can follow through 1-block spaces
  • Opens doors, gates, and trapdoors
  • Leather armor increases smell range
  • Wool/moss reduces hearing

Player Corpse:

  • Spawns when a player dies in the backrooms
  • Stores the player's entire inventory as a grave
  • Never despawns
  • 3-hit system to retrieve loot
  • Relies on hearing (better than villager corpse, but has shorter smelling range)
  • Breaks wooden doors, climbs ladders
  • Can crawl through 1-block spaces

Enderman Corpse:

  • Spawns in overworld, nether, and end
  • Always active
  • Aggro when hit or shot (no eye-based aggro)
  • Small chance to aggro when player kills villager corpse nearby
  • Water/rain immune
  • Cannot pick up blocks
  • Calm with Ender Pearl or Eye of Ender
  • Enraged by Spider Eye
  • Occasional custom sounds

Creeper Corpse:

  • Spawns rarely in overworld and backrooms
  • Always active
  • Triple explosion power
  • Can be charged by lightning
  • Spreads bacteria vines across crater
  • Blindness effect for 5 seconds to nearby players

Still Life

Peaceful entities that sometimes get scared of other entities lurking inside this dimension

The Manager

  • Patrols exclusively within Level 4 Abandoned Offices

  • Its large central eye dynamically tracks player movements within its socket

⚠ Spoiler: Manager Entity Information

  • When hunting, drops into a rapid, aggressive four-limbed spider crawl

  • Crawls upside-down along ceilings to bypass cubicle walls

  • Smashes through lockers

  • Stands directly over your shoulder to supervise terminal work

  • Instantly attacks if a player quits, fails, or walks away from their assigned quota

  • Only one Manager per player

Printer

Rarely found in office cubicles, these blocks can transform items.

⚠ Spoiler: Printer Mechanics
  • Accepts any item from your hand
  • Returns a random crafting result using that item
  • 30% chance to return the same item
  • 5% chance to jam (permanently consumes the item)
  • 5 uses per player, then 40-minute cooldown
  • Works with items from other mods
  • Glows when processing

Computer

  • Generates in three states: Active (On), Powered Down (Off), or Glitched

  • Right-clicking opens the proprietary Glyph Containment terminal interface

  • Presents a 24-glyph field written in Standard Galactic runes

  • Players have 30 seconds to route matching runes into three designated containment nodes

  • Runes must be matched across Color, Size, and Motion properties

  • The Manager stands directly behind you while the terminal is active

  • Committing three sorting errors triggers an immediate attack

  • Closing the terminal interface or walking away mid-session counts as abandonment and provokes the Manager

  • Successfully meeting the quota rewards Speed II, Night Vision, XP, sanity recovery, and a chance for Almond Water

  • Completing the quota temporarily pacifies the Manager and places the terminal on a cooldown

Configuration

Backrooms Bounded is fully configurable through both the config file and in-game commands.

In-Game Commands

Works for all players, no cheats required:

/backroomsconfig show
/backroomsconfig reload
/backroomsconfig entry <method> <chance>

Examples:

Entry Adjustment Subcommands:

/backroomsconfig entry death <0.0 - 1.0>

— Overworld death respawn chance

/backroomsconfig entry damage <0.0 - 1.0>

— Low-health damage noclip chance

/backroomsconfig entry sleep <0.0 - 1.0>

— Bed sleeping nightmare noclip chance

/backroomsconfig entry portal <0.0 - 1.0>

— Nether portal malfunction chance

/backroomsconfig entry block_break <0.0 - 1.0>

— Chance for mined blocks to reveal a Glitch Block

/backroomsconfig entry glitch_touch <0.0 - 1.0>

— Overworld Glitch Block teleport chance

/locateoffice
  • Locates nearest office biome
/panic
  • Shows player's panic level

Config File

Located at config/backroomsbounded.json

Configurable Options Include:

  • Speeds, damage, spawn rates of some entities
  • All entry/exit method chances
  • Corpses
  • Glitch block chances

Planned Features

Future updates are planned to expand the experience with:

  • New entities
  • Additional Backrooms areas
  • Cameras and photography systems
  • New survival mechanics