ModsJava
Spiral Abyss Mod (1.21.1, 1.20.1) – Fight Through Six Floors of Mob Waves
Java mod listed for Minecraft 1.20–1.21. Download on the author's site.
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Spiral Abyss Mod adds a multi-floor combat dungeon inspired by Genshin Impact. You fight through harder mob waves, earn stars for how well you play, and face strong bosses. Each cleared floor gives you chests with rare rewards.
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Features:
- Multi-Floor Dungeon: The dungeon has 6 floors, and each floor has 3 waves of mobs.
- Star Ratings: Each wave has 3 challenges. Finish all of them across a floor to earn the full 9 stars.
- Reward Chests: You can win up to 3 chests per run. 3 to 5 stars give 1 chest, 6 to 8 stars give 2 chests, and 9 stars give all 3.
- Rare Drops: On Floors 5 and 6, the Golden Chest has a 5% chance to hold a rare reward. The chest glows gold, and the rare item leaves a golden trail.
- New Portal: You build the portal from special blocks. The Portal Activation Block only drops from loot chests in End Cities.
- Ruined Portals: Random ruined portals appear in the world, and each has a chest. Some missing portal blocks are inside, but the final piece is only found in The End.
- Lets you preview the chest loot for each floor before you start.
- Shows all mobs and challenges for each wave before you fight.
- Sends a congratulation message to every player on the server when someone picks up a rare item.
- Works with many other mods, so their mobs can show up in the waves.
- Lets you add new wave types, mobs, and loot with a data pack.
Portal Parts:
- 5 Portal Horizontal Blocks.
- 4 Portal Vertical Blocks.
- 4 Portal Curve Blocks.
- 1 Portal Activation Block from End City loot chests.
Compatible Mods:
- Mutant Monsters
- Mowzie Mobs
- Aquamirae
- Alex’s Caves
- L_Ender ‘s Cataclysm
- Bosses’Rise
- Bosses of mass destruction
- Legendary monsters
- Iron’s Spells ‘n Spellbooks
- Goety
- Born in Chaos
- Cult of Azazel
- Savage & Ravage
- Marium’s Soulslike Weaponry
- Twilight Forest
- Illager Invasion
- Illage and Spillage: Respillaged
- Ice and Fire
- Rats
- EEEAB’s Mobs
- Annoying Villagers
- Deeper and Daker
Configuration:
- Change the Abyss Button in the mod config.
- Block certain mobs from being picked for waves in the server config.
- Follow the data pack guide on the mod’s GitHub page (docs/datapack-guide.md) to make new wave types, mobs, and loot.
How to Play:
- Collect the portal blocks. Check ruined portal chests for some of them, and find the Portal Activation Block in an End City chest.
- Build and activate the portal, then walk in.
- Pick a floor from the menu. Click a floor to see its chest loot, or click a wave to see its mobs and challenges.
- Find the Key Entity inside the dimension and interact with it to start the dungeon.
- Beat the 3 waves and finish the challenges to earn up to 9 stars.
- Open your reward chests. On Floors 5 and 6, look for the Golden Chest glow that shows a rare drop.
Screenshots:



Spiral Abyss Mod Download Links
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21.1, 1.20.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on the file's original source — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
Spiral Abyss Mod (1.21.1, 1.20.1) – Fight Through Six Floors of Mob Waves is a free Minecraft Java mod. Compatible with Minecraft 1.21.1, 1.20.1. Download it and open it directly in the game.