- 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
- 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
- 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
- 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