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Underground Worlds Wiki & Guide

Java EditionMod

Adds abyssal biomes and structures with Abyssal Prismarine blocks, lanterns, conduits, and the Abyssal Guardian mob.

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Contents (8)
  1. Guides
  2. Processes
  3. Items
  4. Blocks
  5. Mobs
  6. Frequently asked questions
  7. Related mods

Guides

Step-by-step, in-game.

Craft and Use Spider Armor from Black Recluse FangsLocating Spider Caves Spider Caves generate beneath cold and dry biomes. Look for areas filled with cobwebs, spider…Get Started in the Underground JungleFinding the Underground Jungle The Underground Jungle generates beneath warm biomes like jungles, savannas, and…Navigate the Underground Desert and Collect FossilsFinding the Underground Desert The Underground Desert generates beneath surface deserts and arid biomes. Dig down and…Survive and Thrive in the Underground TundraAccessing the Underground Tundra The Underground Tundra spawns beneath cold biomes like snow plains, taiga, and…

Recipes

Every recipe the mod adds, grouped by how it is made.

Crafting · 44minecraft:stonecutting · 37minecraft:smelting · 2

Items

ABDFGHIJMPQSTW

A

Abyssal Guardian Spawn EggAbyssal Prismarine CrystalsAbyssal Prismarine ShardAbyssal Shell ShardAntidote FlaskAxe of RegrowthAxe of the Jungle Temple

B

Black Recluse Spawn EggBlade of the Jungle

D

Desert Banner PatternDesert Charm

F

Freezing AxeFreezing HoeFreezing PickaxeFreezing ShovelFreezing SwordFrozen CoreFrozen Zombie Spawn Egg

G

Glow Bogged Spawn EggGlowshroom Stew

H

Heart of the AbyssHoe of the Jungle Temple

I

Icy Creeper Spawn Egg

J

Jungle Bee Spawn EggJungle SporesJungle Zombie Spawn Egg

M

Music Disc

P

Pickaxe of the Jungle Temple

Q

Quicksand Bucket

S

Shovel of the Jungle TempleSnowflake Banner PatternSpider BootsSpider FangSpider Hatchling Spawn EggSpider HoodSpider PantsSpider TunicSword of the Jungle Temple

T

Temple Key

W

Winter BootsWinter HoodWinter JacketWinter PantsWrapped Spawn Egg

Blocks

ACGIJMPQSTW

A

Abyss ChestAbyssal ConduitAbyssal LanternAbyssal PrismarineAbyssal Prismarine Brick SlabAbyssal Prismarine Brick StairsAbyssal Prismarine Brick WallAbyssal Prismarine BricksAbyssal Prismarine SlabAbyssal Prismarine StairsAbyssal Prismarine Tile SlabAbyssal Prismarine Tile StairsAbyssal Prismarine Tile WallAbyssal Prismarine TilesAbyssal Prismarine Wall

C

Chiseled Temple BricksCracked Pyramid BricksCracked Temple Bricks

G

GlowshroomGlowshroom BlockGlowshroom GrassGlowshroom Vines

I

Ice Brick SlabIce Brick StairsIce Brick WallIce BricksIce ChestIcicle

J

Jungle GrassJungle Vines

M

Mossy Temple BricksMushroom Grass

P

Polished Abyssal Prismarine BricksPyramid Brick SlabPyramid Brick StairsPyramid Brick WallPyramid Bricks

Q

Quicksand

S

Sandstone Pressure PlateSpider Egg

T

Temple Brick SlabTemple Brick StairsTemple Brick Tile SlabTemple Brick Tile StairsTemple Brick Tile WallTemple Brick TilesTemple Brick WallTemple BricksTemple Chest

W

Web Covered Chest

Mobs

Creatures this mod adds.

Abyssal GuardianBlack RecluseFrozen ZombieGlow BoggedIcy CreeperJungle BeeJungle ZombieSpider HatchlingWrapped

Frequently asked questions

How do I find an underground biome?
Underground biomes generate naturally beneath their surface counterparts—dig down in a jungle to find the Underground Jungle, under cold biomes for Spider Caves or Underground Tundra, and under deserts for the Underground Desert. They typically begin spawning around Y-level 0 and below, but you may need to explore vertically to locate them.
What's the best way to start in the Underground Jungle?
Bring a pickaxe, sword, and food before descending. Watch for Jungle Zombies and Jungle Bees that can poison you—craft or find an Antidote Flask to counter poison damage. Locate a Jungle Temple to obtain unbreakable temple tools, which can be upgraded into powerful weapons like the Blade of the Jungle.
How do I get Spider Armor?
Hunt Black Recluse spiders in Spider Caves to collect Spider Fangs, then craft these fangs into Spider Armor pieces. A full set grants you a chance to poison attackers when you're hit, making it excellent for melee combat in underground areas.
Can I freeze mobs with Freezing Tools?
Yes—craft Freezing Tools using frozen cores found in Ice Dungeons within the Underground Tundra. When you hit mobs with these tools, they become frozen and immobilized temporarily, giving you time to escape or deal additional damage.
What happens if a mob freezes me?
Frozen Zombies, Icy Creepers, and Strays in the Underground Tundra can freeze you on contact or through explosions. Avoid prolonged exposure to these mobs, and consider wearing armor or using healing items to recover quickly if frozen.
Where do I find fossils and diamond ore?
The Underground Desert is filled with fossils and valuable ore deposits, including diamond ore embedded in the sand and rock. Mine carefully to avoid quicksand traps while collecting these resources.
What do the upgraded jungle temple tools do?
Temple tools can be upgraded into special weapons: the Blade of the Jungle inflicts poison on enemies, and the Axe of Regrowth plants saplings when you hit blocks or mobs. These upgrades make exploration and combat more dynamic.
Do underground biomes have different loot than the surface?
Yes—each underground biome has unique loot pools. The Underground Jungle offers temple tools and Antidote Flasks, Spider Caves drop Spider Fangs, the Underground Tundra contains frozen cores, and the Underground Desert has fossils and ore. Explore each biome to find specialized equipment.
Can I bring mobs from underground back to the surface?
Underground mobs like Jungle Zombies, Black Recluse, and Frozen Zombies can travel with you if you lead them upward, but they may despawn or behave differently in non-matching biomes. It's generally safer to farm resources underground where these mobs naturally spawn.
Do I need specific tools to mine underground blocks?
Most underground blocks can be mined with standard pickaxes, but temple tools and upgraded weapons are unbreakable and more efficient. Frozen cores and spider fangs require normal mining but are best collected with appropriate tools to maximize durability.