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Regions Unexplored expands the Nether with 5 new biomes, each featuring distinct vegetation, particle effects, and hostile atmospheres that diversify the hellish dimension.

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Nether biome features

All Nether biomes share extreme heat and hostile conditions but offer unique resources and aesthetics.

No rain

All Nether biomes have no precipitation and maintain temperature of 2.0 (extreme heat).

Unique flora

Each biome features exclusive Nether plants, from glowing earlight to toxic fungal growth.

Particle effects

Atmospheric particles create immersive environments, from warped spores to crimson spores.

Hostile mobs

Dangerous mobs spawn including piglins, hoglins, wither skeletons, and zombified piglins.

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Dark Nether biomes

Biomes with darker color palettes and ominous atmospheres.
A dark valley filled with blackstone formations and cobalt vegetation glowing with ethereal blue light. Features obsidian spires rising from the basin floor.Temperature: 2.0 (extreme heat) | Precipitation: No

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Features

  • Obsidian spires - tall dark formations
  • Cobalt trees - unique Nether wood type
  • Cobalt roots - underground root systems
  • Cobalt earlight - glowing blue plants
  • Tall cobalt earlight - larger light sources
  • Hanging earlight - ceiling vegetation
  • Blackstone clusters - natural blackstone formations
  • Enhanced blackstone blob generation

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Atmosphere

  • Sky/fog color: Dark blue (395547)
  • Water color: Blue-green (5463027)
  • Foliage: Blue-green (5463027)
  • Grass: Blue-green (5463027)
  • Particles: Warped spores (0.02 density)
  • Sounds: Crimson forest loop with warped mood
  • Music: Crimson forest ambient

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Mobs

  • Zombified piglins - Common (25 weight)
  • Wither skeletons - Common (20 weight)
  • Enderman - Rare (1 weight)
  • Striders - Very common (60 weight)
Blackstone basin provides excellent blackstone and cobalt wood farming. The cobalt earlight serves as a unique light source for Nether builds.
A hellish woodland featuring brim willow trees and volcanic plant life. White ash falls constantly from the burning atmosphere.Temperature: 2.0 (extreme heat) | Precipitation: No

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Features

  • Brim willow trees - standard and tall variants
  • Brimsprout - small Nether plants
  • Dorcel - unique vegetation
  • Brim flames - natural fire sources
  • Brimwood shrubs - ground coverage
  • Standard Nether features (glowstone, magma, mushrooms)

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Atmosphere

  • Sky/fog color: Dark orange (3479565)
  • Water color: Orange-brown (3479565)
  • Foliage: Burnt orange (7295817)
  • Grass: Burnt orange (7295817)
  • Particles: White ash (0.03 density)
  • Sounds: Basalt deltas loop with warped mood
  • Music: Basalt deltas ambient

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Mobs

  • Hoglins - Very common (9 weight)
  • Piglins - Common (5 weight)
  • Zombified piglins - Rare (1 weight)
  • Striders - Very common (60 weight)
Hoglins are aggressive and spawn frequently. Bring warped fungus or wear gold armor to avoid piglin attacks.
A vast Nether wasteland rich in redstone with pointed redstone formations. Features reddish atmosphere and crimson particle effects.Temperature: 2.0 (extreme heat) | Precipitation: No

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Features

  • Nether pointed redstone - unique redstone formations
  • Enhanced redstone-themed terrain
  • Standard Nether features (glowstone, fire, magma)
  • Default Nether ores

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Atmosphere

  • Sky/fog color: Dark red (5439488)
  • Water color: Red (10623252)
  • Foliage: Red (10623252)
  • Grass: Red (10623252)
  • Particles: Crimson spores (0.025 density)
  • Sounds: Nether wastes ambient
  • Music: Nether wastes ambient

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Mobs

  • Zombified piglins - Very common (100 weight)
  • Striders - Very common (60 weight)
  • Minimal other mob spawns
Redstone abyss provides redstone resources in the Nether, useful for Nether-based technical builds.

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Bright Nether biomes

Biomes with lighter colors and glowing vegetation.
A luminous Nether meadow covered in glowing cyan vegetation and glister formations. The brightest and most peaceful-looking Nether biome.Temperature: 2.0 (extreme heat) | Precipitation: No

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Features

  • Glistering meadow rock - unique stone formations
  • Glister bulb - large glowing plants
  • Glistering sprout - small light sources
  • Glistering fern - medium vegetation
  • Glistering bloom - flowering plants
  • Glister spire - tall formations
  • Glistering ivy - hanging vines

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Atmosphere

  • Sky/fog color: Cyan-blue (4328552)
  • Water color: Bright cyan (12058781)
  • Foliage: Bright cyan (12058781)
  • Grass: Bright cyan (12058781)
  • Particles: Warped spores (0.02 density)
  • Sounds: Crimson forest loop with warped mood
  • Music: Warped forest ambient

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Mobs

  • Ghasts - Common (5 weight)
  • Hoglins - Common (5 weight)
  • Striders - Common (40 weight)
  • Enderman - Rare (1 weight)
The abundant glowing plants make glistering meadow ideal for Nether bases. Harvest glister vegetation for unique decorative blocks.
A toxic fungal forest overtaken by giant yellow bioshroms and poisonous vegetation. Features unique mycotoxic particle effects.Temperature: 2.0 (extreme heat) | Precipitation: No

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Features

  • Giant yellow bioshroms - massive fungal trees
  • Small yellow bioshroms - smaller variants
  • Mycotoxic mushrooms - poisonous fungi
  • Mycotoxic grass - toxic ground coverage
  • Mycotoxic daisy - dangerous flowers
  • Mycotoxic bioshroom - unique mushroom type
  • Extra glowstone generation

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Atmosphere

  • Sky/fog color: Sickly yellow (10717988)
  • Water color: Yellow-green (10717988)
  • Foliage: Yellow-green (10717988)
  • Grass: Yellow-green (10717988)
  • Particles: Mycotoxic spores (0.01 density)
  • Sounds: Warped forest ambient
  • Music: Warped forest ambient

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Mobs

  • Zombified piglins - Very common (100 weight)
  • Piglins - Common (5 weight)
  • Striders - Very common (60 weight)
The mycotoxic atmosphere and fungi suggest dangerous conditions. The biome’s appearance alone signals caution.

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Locating Nether biomes

1

Build a Nether highway

Create safe tunnels at Y=120 in the Nether ceiling or pathways across the lava ocean to explore efficiently.
2

Use locate command

Use /locatebiome regions_unexplored:biome_name to find specific Nether biomes and their coordinates.
3

Look for color changes

Each Nether biome has distinct fog and foliage colors. Watch for color shifts as you travel.
4

Listen for audio cues

Different ambient sounds and music indicate when you’ve crossed into a new biome.

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Resource gathering

Harvest cobalt wood for unique building blocks. Mine blackstone clusters efficiently. Collect cobalt earlight for lighting. Bring a warped fungus on a stick for strider transportation.

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Survival tips

Fire resistance

Always carry fire resistance potions when exploring Nether biomes. Lava is abundant in all biomes.

Gold armor

Wear at least one piece of gold armor to prevent piglin aggression in biomes where they spawn.

Build safe platforms

Create cobblestone platforms for safe navigation across lava oceans between biomes.

Mark coordinates

Save coordinates of interesting biomes. The Nether is vast and biomes can be hard to relocate.
All Nether biomes maintain the standard 8:1 travel ratio with the Overworld, making them useful for long-distance transportation systems.

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