CurseForge · Minecraft modpack
Abyssal Descent
⛏️ 450+ Block Deep World Cave Exploration/Progression Pack! 🗺️ 25+ Cave Biomes!
Quick answer
Which Abyssal Descent release should I use?
Abyssal-Descent-Teaser-Pack-v4 is a complete pack release for 1.20.1 with Forge 47.4.10. Install it as its own launcher instance. If the creator publishes a separate server file, make sure it names this exact pack release. 134 mods in this pack file.
Pack setup
How should I set up Abyssal Descent for players and a server?
Use Abyssal-Descent-Teaser-Pack-v4 as the pack version. Install the pack as its own launcher instance. The creator’s listing does not name a separate server file, so check the release notes before setting up a dedicated server. Do not upload the ordinary client folder blindly.
A pack is a matched client and server setup, not one mod with an install-side label. Keep its release, loader, manifest and overrides together.
These numbers come from the pack file you chose. “Not labelled” means we don’t know which side it belongs on—not that it is safe everywhere. The file count is not a RAM estimate.
What are the server requirements for Abyssal Descent?
Abyssal-Descent-Teaser-Pack-v4. Change the pack release and its contents or setup may change too.
The selected pack release is Abyssal-Descent-Teaser-Pack-v4. That file is for Minecraft 1.20.1 with Forge 47.4.10. It contains 134 mod projects. The creator’s listing does not name a separate server file. Check their notes before using one, and do not upload an ordinary client folder or rebuild the pack mod by mod. A file count cannot tell us the right RAM, CPU or storage; size the server for the players and world you actually run.
About this project
What kind of pack is Abyssal Descent?
This is the official sibling pack to Abyssal Ascent.

Abyssal Descent is a Cave Exploration Vertical Progression modpack where the world is 450+ Blocks deep, split into 5 layers with unique progression, custom caves, bosses, structures and lots of custom mechanics.

- Full Multiplayer support (E4MC)
- 5 (12 planned) Layers of Caves to Explore
- 450+ Blocks Deep (1500+ planned)
- 25+ Cave Biomes with Custom Generation
- Custom Progression
- Tutorial World
- Exclusive Mods and Content
- Full Mod Integration
- ACTUALLY Optimized + Shaders without any bloat or slop (we tested performance mods extensively ourselves the pack can run on 2gbs of allocated RAM on java 21 with arguments listed under requirements)
- Custom shader presets

LAYERS
In Abyssal Descent the world is split into layers, with the power of Immersive Portals "dimension stacking" you can mine right through bedrock to seemlessly enter the next layer with no loading screen.

Delvers' Beginnings, is the first layer containing a diverse underground ecosystem rich with valuable resources rarely found in surface caves; Crystal Caverns, Pink salt spikes Lush ancient deltas, unique mobs and bosses from 15+ mods can all be found here!

The Undergarden is a dark, subterranean world located far deep below the Deepslate 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.
The Infernal Crossing is an exceptionally dangerous series of magmatic caves and canyons shrouded in darkness. Giant Centipedes, Ghouls and other horrors reside here waiting to turn any intruders who enter their domain. Conquer (or succumb) to the Infernal Crossing and reap the supernatural rewards this layer offers.
Requirements
ABSOLUTE MINIMUM
Java 17: 4GBs Allocated Memory
Java 21 with Args: 2GBs Allocated Memory
RECOMMENDED
Java 17: 8GBs Allocated Memory
Java 21 with Args: 4GBs Allocated Memory
Java 21 ONLY args-XX:+UnlockExperimentalVMOptions -XX:+UseZGC -XX:+ZGenerational -XX:+AlwaysPreTouch

- Server Pack/official server host
- Nether and Aether (1.0 Version)
- Total Enchanting System Overhaul (1.0 Version)
- Primordial Caverns (Dino Layer)
- Frozen Waste (Ice Layer)
- The Abyssopelagic zone (Ocean Layer)
- Stygian Depths (Custom The Abyss II cave dimension)
- Noodle/Inverted Cave Dimension
- The Deep Dark (Custom Deep Dark Dimension)
- Connected Caves between layers
- 1500+ blocks deep caves
- 500+ blocks of sky islands to explore
DEVELOPMENT
- Thousands of lines of data pack json was written exclusively for Abyssal Descent; primarily world gen for the new cave dimensions, we combined content from 10+ mods to create new dimensions with the power of data packs!
- A forked version of the undergarden mod with the stoneborn trading system rewritten.
- Developed 6 custom Java Mods specifically for the pack
Join our Discord to keep up with development we post development updates all the time! - https://discord.gg/xhKz5pWpuG
DEVELOPERS: Eclipse Ilx & slab
CONTRIBUTORS: mrsketchystuff, DovahFruit/Hiro, Qwerty97474, Dreaming Critting, Greathive, Uni, Aimsell
Check out Abyssal Ascent here! - https://www.curseforge.com/minecraft/modpacks/abyssal-ascent
Project description from CurseForge.
Mods in Abyssal-Descent-Teaser-Pack-v4
Open any mod on Modpacks.ch to check its files and dependencies.
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Abyssal Descent by Minecraft version and loader
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Recent files
Abyssal Descent versions and loaders
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