CurseForge · Minecraft mod
Boss Madness
Adds multi-phase bosses with unique attacks, music and huge generated dungeons. Defeat them for unique weapons, armor and music discs!
Quick answer
Which Boss Madness release should I use?
Boss Madness bossmadness-1.0.1-neoforge-1.21.1.jar targets 1.21.1 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.
Where it goes
Is Boss Madness required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does Boss Madness bossmadness-1.0.1-neoforge-1.21.1.jar need?
bossmadness-1.0.1-neoforge-1.21.1.jar. Change the file and its required mods may change too.
This file does not list any required mods. Do not add a library just because a different file uses it.
This file does not list any required or optional mods.
Before you install it
Add Boss Madness without breaking your instance.
Built for Boss Madness bossmadness-1.0.1-neoforge-1.21.1.jar. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use bossmadness-1.0.1-neoforge-1.21.1.jar. It targets 1.21.1 with NeoForge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
This file does not list any required mods. Do not add a library just because a different file uses it.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside bossmadness-1.0.1-neoforge-1.21.1.jar. It opens that exact file at the source.
About this project
What does Boss Madness add?
Boss Madness
Boss Madness adds hard, hand-crafted boss fights to Minecraft. Every boss has several phases, its own animated 3D model, unique attacks with clear warnings, a custom boss bar, sounds and music, and drops loot you won't find anywhere else.
BOSSES
Imprisoned Knight Soul - deep below the surface lie the Catacombs of the Locked Soul: crypts, libraries, overgrown halls and traps. In the heart of the dungeon a knight's soul is chained in place. Free it, and it fights with spectral blades, grasping hands and soul waves.
Sand King - a huge temple stands in the desert, guarded by statues. On a throne at its far end sits the Sand King. He commands golden gauntlets, sandstorms and sand geysers.
Greed - in the Nether, a ruined colosseum stands in a cavern of lava and gold. Greed waits in the middle of its golden arena. It grows gold spikes out of the floor, hurls gilded boulders and will not let go of its treasure.
Warrior of a Thousand Battles - on the Forgotten Battlefield, among dead trees, broken weapons and old banners, a warrior who has never lost a fight wanders. He throws blades, swings a chained maul and fights harder with every phase.
FEATURES
- 4 bosses with several phases and many different attacks
- 4 dungeons that are different every time (Overworld and Nether)
- Unique weapons with special abilities
- Music discs with original tracks that drop from the bosses
- Custom boss bars, sounds, particles and hints during the fight
- Fully animated 3D models (GeckoLib)
Requires: GeckoLib 4.
Project description from CurseForge.
Pick your setup
Boss Madness by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.20.1
2 loader buildsCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Boss Madness versions and loaders
bossmadness-1.0.1-neoforge-1.21.1.jar
bossmadness-neoforge-1.21.1-1.0.1.jar
9 Nov 2026
bossmadness-1.0.1-fabric-1.21.1.jar
bossmadness-fabric-1.21.1-1.0.1.jar
9 Nov 2026
bossmadness-1.0.1-fabric-1.20.1.jar
bossmadness-fabric-1.20.1-1.0.1.jar
9 Nov 2026
bossmadness-1.0.1-forge-1.20.1.jar
bossmadness-1.20.1-1.0.1.jar
9 Nov 2026
bossmadness-1.0.0-fabric-1.21.1.jar
bossmadness-fabric-1.21.1-1.0.0.jar
8 Nov 2026
bossmadness-1.0.0-neoforge-1.21.1.jar
bossmadness-neoforge-1.21.1-1.0.0.jar
7 Nov 2026
bossmadness-1.0.0-fabric-1.20.1.jar
bossmadness-fabric-1.20.1-1.0.0.jar
6 Nov 2026
bossmadness-1.0.0-forge-1.20.1.jar
bossmadness-1.20.1-1.0.0.jar
6 Nov 2026
Looking for an older file? The official CurseForge project page is in Resources.