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Deep underground, a forgotten land awaits.
Discord: https://discord.gg/zrnMPDM
What is the Undergarden?
The Undergarden is a dark, subterranean world located deep below the bedrock of the Overworld. The flora here has adapted to their conditions and can grow anywhere, independent of light. Strange creatures call these dark lands home, and are plagued by the invasive Rotspawn, monsters originating from a chaotic, mysterious realm.
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Features
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A whole new dimension to explore, build, and survive in
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Over 10 unique entities
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15 biomes
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Ores that have special properties when made into tools and weapons
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Over 10 music tracks
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Over 10 advancements to guide you on your journey
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4 special potion effects
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1 dungeon
And more to come in the future...
How to enter the Undergarden
To enter the Undergarden, you must first craft a Catalyst. You can craft a Catalyst using the recipe below:
Once you have made that, create a frame in the shape of a Nether portal using Stone Bricks or Deepslate Bricks. Activate the Undergarden portal by right clicking the inner bottom of the frame with the Catalyst.
You can also use bricks derived from the Undergarden to create the portal.
All Versions
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[0.9.8] The Undergarden 0.9.8
by quek on Oct 09, 2026
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- fixed crash regarding virulent on newer neoforge versions
- unhardcoded block stripping to the neo datamap
- fixed virulent fluid interactions with water and lava
- fixed some missing and incorrect recipes
- fixed forgotten minion being unspawnable
- fixed some odd behavior with dreadrock breaking slowdown
[0.9.7] The Undergarden 0.9.7
by quek on Oct 09, 2026
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- Made Stoneborn trades data driven. The system works very similarly to the new villager trade system introduced in this update.
- moved all animal foods and tempt items to tags
- moved shearing drops to loot tables
- forgotten guardians will no longer despawn in peaceful: they will now enter an inactive state instead, making them invulnerable to any damage.
- renamed spear to javelin, tweaked their damage, and made them stackable
- added falling leaf particles to leaves
- gave battleaxes a unique 3rd person animation on swing
- added unique models for all baby mobs
- tweaked scintling animations
- moved slingshot ammo to a data component. You can define hit/shoot sounds, particles, effects on hit, and what textures to use on the slingshot when charging it up with said ammo.
- added thornreed, an Undergarden equivanlent to sugar cane that generates underwater
- added a bunch of new sediment variant blocks
- added the undergar, a new neutral fish found in the ancient sea. Drops undergar fillets on death
- buffed froststeel armor values slightly
- buffed froststeel tool durabilty significantly
- slightly adjusted most other tool and armor values
- utherium tools can now break dreadrock related blocks
- fixed a game crash when giving yourself a high level of the purity effect
- adjusted the utheric infection damage curve to be more exponential instead of linear. Damage now starts off slow but ramps up the longer you have it
- added cloggrum grate, pillar, and ladder blocks
- adjusted virulent mix bubbling sounds to play less frequently
- added twistybush, a new twistytwig-dropping block that spawns in various
- improved infuser logic
- added rogdorium infused underbeans, which will mutate a dweller into a
- increased drop chance of wigglewood saplings
- added a new consume effect for utheric infection changes
- changed Undergarden mushroom blocks to actually have inside textures
- added a BUNCH of missing tag contents
- fixed the "strange fish" advancement not working with the cloggrum bucket
- stoneborn can no longer be traded with if theyre angry at something
- added new config option to spawn in undergarden. If the bonus chest
first spawn
- rotwalkers and stoneborn will now actually swing to hit their target
- remodeled the s'mog
- depthrock bed recipe now supports both mogmoss variants
- removed undergarden's scaffold recipe
- removed undergarden's lead recipe
- greater dwellers now give birth to normal baby dwellers
- normal dwellers are now immune to the utheric infection
- removed undergarden fog config
- fixed vanilla dirt generating under some trees rarely
- battleaxes can now only be swung with a full melee charge
- probably other small minute things we forgot about
- adjusted textures for:
- mushrooms
- indigo mushroom blocks
- seeping ink
- smog vents
- gooey and virulence effects
- brute
- cloggrum bars
- cloggrum and forgotten tools
- froststeel axe and sword
- bloody inky, and indigo stews
- brute tusk
- slop bowl
- forgotten upgrade template
- utheric shard and cluster
[0.9.6] The Undergarden 0.9.6
by quek on Oct 09, 2026
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- changed mysterious pots to be more resiliant to despawning
- fixed unique weapon abilities only working on player attackers
- small tweaks to froststeel weapon sprites
- added capability support to the infuser (thanks to rexlNico)
- tweaked the utheric infection and gloomgourd overlays
- added pt_br translation (thanks to PrincessStelllar)
- added es_es translation (thanks to Diaburomon)
[0.9.5] The Undergarden 0.9.5
by quek on Oct 09, 2026
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- Biome distribution has been reworked. Subject to further changes
- Gronglets are now edible, albiet at a dire cost
- Added client config to disable the Utheric Infection overlay
- Added missing lang entries for configs
- Utheric Infection damage now increases over time
- Added more valid portal frame blocks
- Cracked Stone Bricks
- Chiseled Stone Bricks
- Cracked Deepslate Bricks
- Cracked Deepslate Tiles
[0.9.4] The Undergarden 0.9.4
by quek on Oct 09, 2026
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- Added modded Shears support for Undergarden block loot tables
- Fixed Forgotten with Forgotten Pickaxes rarely spawning in Catacombs
- Updated some translations
- Dreadrock now only takes forever to mine with the wrong tool if it's in Undergarden
- Tweaked Rogdorium Grove biome colors
- Added special ambient particle to Rogdorium Grove
- New textures for Dreadrock ore blocks
- New Utherium item & armor textures
- New Ancient armor textures
- Brutes can now spawn in Frostfields
- Cloggrum buckets now have a placeholder texture for missing bucket content textures
- Cloggrum bucket fixes
- Undergarden trees no longer turn dirt into Deepsoil when growing
- Added Depthrock Pot block
- Added Mysterious Pot entity
- Added more Forgotten Vestige variants
- Added Depthrock & Mysterious Pot generation to Forgotten Vestige houses
- Added ruins feature to Forgotten Fields (small piles of rubble)
- Changed Catalyst recipe and texture, now requires Copper, Stone, and an Ender Pearl
- Added Crumbling Catalyst, a one time use catalyst made with Cloggrum, Depthrock, and a Forgotten Nugget
- Eating Rogdorium now counts towards the "A Much Needed Antidote" advancement
- "Into the Depths" advancement is now a child of the "What Now Is" advancement
- "Buildin' a Sentry" advancement is now a task instead of a goal
- "I <3 Infusing" advancement is now a task instead of a goal
- Fixed Rogdorium being in the common gems tag
- Added Forgotten Metal Block to the "Collector's Edition" advancement
[0.9.3] The Undergarden 0.9.3
by quek on Oct 09, 2026
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- fixed a crash when opening the creative inventory with aether installed
[0.9.2] The Undergarden 0.9.2
by quek on Oct 09, 2026
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- Buffed Purity effect, now reduces infection amount by the effect level every 10 seconds
- Buffed amount of armor infusion per piece of Rogdorium in the Infuser (was 50~ per piece, now 600 per piece!)
- Eating Rogdorium now completely cures you of the Utheric Infection
- Eating Rogdorium nuggets now cures you a little
- Fixed being able to waste Rogdorium on armor with maximum infusion in the Infuser
- Maybe fixed Undergarden portal placement
- Added fullbright to Droopfruit vines, Shimmerweeds, and Ditchbulb plants
- Added Cloggrum Buckets. They should support modded fluids etc.
- Added compatibility between Create trains and Undergarden portals
- Added the ability to make signs glow with Droopfruit
- Added some missing tags to Undergarden stuff
- Added Y rotation to Ancient Roots
- Updated several translations
- Rogdoric and Utheric Gronglets are now supported by the Ethically Questionable advancement
- Made item rarities more consistent
- Fixed JEI logspam
- Fixed Forgotten tools displaying on almost every Jade tooltip
- Fixed Stoneborn despawning on Peaceful
- Fixed Redstone torches being present in the Catacombs
- Fixed Battleaxes not being enchantable
- Fixed Undergarden stone buttons requiring tools to harvest
- Removed Ancient Root blocks using a weird sound type
[0.9.1] The Undergarden 0.9.1
by quek on Oct 09, 2026
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- fixed Infuser recipe requiring Utherium Crystals
- fixed Infuser and Rogdoric Roots not having effective tools
- fixed Jade not showing the required tool for Dreadrock
- fixed the infection layer not properly fitting flat planes on models
- gave the infuser a proper fitting hitbox
- tweaked Denizen hitboxes and eye height
[0.9.0] The Undergarden 0.9.0
by quek on Oct 09, 2026
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- Extended world depth of the Undergarden dimension to y -64
- Added Denizen Camp structure
- Added Depleted Mine structure
- Added Depths biome
- Added Infected Depths biome
- Added Puff Mushroom Forest biome
- Added Rogdorium Grove biome
- Added Utheric Cluster item
- Added Dreadrock blocks
- Added Rogdorium items and ore
- Added Utherium Growth block
- Added Ancient Root blocks
- Added Mysterious Totem block
- Added Mysterious Mask item
- Added Spear item
- Added Infuser block
- Added Puff Mushroom blocks
- Added Rogdoric and Utheric Gronglets
- Added Purity status effect
- Added Rotbelcher entity
- Added Denizen entity
- Added Greater Dweller entity
- Added new advancements related to the Depths
- Added Utheric Infection system
- Armors can now be infused with Rogdorium in the Infuser to hold back the Utheric Infection
- Changed Undergarden boulders to be larger and less common
- Utherium ores now drop Utheric Clusters
- Utherium Crystals can no longer be crafted with Utheric Shards
- Utherium Shards can be used to craft Utheric Clusters
- Utherium Crystals are now crafted using the Infuser
- Rotbeasts no longer spawn everywhere, only in the Barren Abyss and Depths biomes
- Smog Spires biomes should now be larger
- Added sparse Smogstem Trees to the Forgotten Fields
- Tweaked Frostfields biome placement
- Fixed some Undergarden wood types using the Warped wood sounds
- Fixed Mushroom Veils producing light
- Probably more stuff I forgot about
[0.8.22] The Undergarden 0.8.22
by quek on Oct 09, 2026
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- Forgotten are now considered undead
- Added special dimension transition screen to the Undergarden
- Added Undergarden food items to the c:foods tag
- Fixed Underbeans, Blisterberries, and Ditchbulbs not growing
[0.8.21] The Undergarden 0.8.21
by quek on Oct 09, 2026
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- Fixed Undergarden portal effect messing with other portals
[0.8.20] The Undergarden 0.8.20
by quek on Oct 09, 2026
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- Undergarden boats are no longer their own entity and use the vanilla one
- Portal improvements
- Catalyst can now be used on any inner face of the portal frame
- AmberGoop updated German translation
- Fixed Undergarden armors not being enchantable in the enchanting table
[0.8.19] The Undergarden 0.8.19
by quek on Oct 09, 2026
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- Ported to 1.21
- Overhauled Catacombs generation
- Added new logo
- Undergarden mushrooms now use the vanilla mushroom grow tag
- Fixed Attached Gloomgourd Stem not having correct rotations
- The Undergarden portal now has a different travel animation (subject to change)
- Powdered Snow in the Frostfields/Frosty Smogstem Forest can now be carved by the cave carver
- Fixed Carved Gloomgourd overlay not rendering when worn on head
- Reduced the frequency of Virulent Mix's ambient noise
- Fixed Virulent Mix fog not working when in the Undergarden
[0.8.18] The Undergarden 0.8.18
by quek on Oct 09, 2026
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- Fixed crash when using newer NeoForge versions
[0.8.17] The Undergarden 0.8.17
by quek on Oct 09, 2026
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- Fixed server crash
[0.8.16] The Undergarden 0.8.16
by quek on Oct 09, 2026
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- Port to 1.20.6
- Fixed Scintling Goo acting weird, it disappears faster now
- You can now kick villagers out of Depthrock Beds (very important)
- Undergarden "forge:" tags are now in the "c:" namespace to match the NeoForge change
[0.8.15] The Undergarden 0.8.15
by quek on Oct 09, 2026
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- port to NeoForge 1.20.4
- added support for Catalogue
[0.8.14] The Undergarden 0.8.14
by quek on Oct 09, 2026
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- Rebalanced Catacombs chest loot table
- Added support for upside down English language (I guess that's a thing)
- Depthrock Beds now work in the Overworld
- Fixed compatibility problems with Undergarden's fog
- Forgotten Armor has been renamed to Ancient Armor, and is now obtainable from slaying Forgotten
- Fixed the Catacombs getting flooded by the sea sometimes
- Fixed Shimmerweeds not producing particles
[0.8.13] The Undergarden 0.8.13
by quek on Oct 09, 2026
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- fixed class cast exception crash when using other mods that use capabilities
- fixed missing item models for the Forgotten's armor items
- AmberGoop updated the German translation
[0.8.12] The Undergarden 0.8.12
by quek on Oct 09, 2026
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- fixed invalid player data issue on servers
[0.8.11] The Undergarden 0.8.11
by quek on Oct 09, 2026
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- Fixed a crash with step height attribute when running on Forge
- Fixed server crash
[0.8.10] The Undergarden 0.8.10
by quek on Oct 09, 2026
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- added the Forgotten, an armored skeleton that roams the halls of the catacombs.
- added the S'Mog, a taller, smoggier version of the mog found in the Smog Spires and Barren Abyss
- added Blue Mogmoss, obtained from shearing a S'Mog
- added Blue Mogmoss Rug
- added Slop Bowls, a disgusting bowl of moss and beans that can be found in the Catacombs
- added a bunch of Vestige structures scattered around the dimension
- added the Frosty Smogstem Forest, a colder variant of the Smogstem Forest
- added a portal travel animation, similar to the nether portal one
- added a config option to turn off the fog in the dimension
- added Powdered Snow patches to the various different cold biomes
- spawners in the Catacombs will now only spawn forgotten instead of various other creatures in the dimension
- Stoneborn will no longer trade Cloggrum Battleaxes. They will now need to be obtained from Forgotten in the Catacombs who will sometimes be carrying one
- removed the ability for Stoneborn to regenerate health over time
- mobs that are immune to Blisterberry Bushes are now controlled through a new tag undergarden:immune_to_blisterberry_bush
- fixed fog flickering underwater
- fixed chest boats from the mod not having recipes
- fixed the Barren Abyss not generating the correct blocks on the surface
- fixed Dead Sea using Bog sounds
[0.8.9] The Undergarden 0.8.9
by quek on Oct 09, 2026
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# Hi Modrinth
- fixed Stoneborn not spawning as much as they should
- fixed Blisterbomb entities not destroying blocks
- reduced density of generated pebbles and shimmerweeds
- updated(?) multiple translations (they're probably outdated)
