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Minecraft Java 1.21 Mods

Browse 1,187 free mods for Minecraft Java 1.21 — popular picks include Undefeatables, Apothic Cataclysm, TenSura boss structure.

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Undefeatables
1.21.1neoforge

Undefeatables

Adds mini-bosses to your minecraft experience.

277kdownloads
Apothic Cataclysm
1.21.1neoforge

Apothic Cataclysm

Allow Apotheosis bosses to user weapons from Cataclysm after player defeated respective Cataclysm bosses

277kdownloads
TenSura boss structure
1.21.1fabric

TenSura boss structure

Add a structure for the Tensura boss.

274kdownloads
Toybox
1.21.1neoforge

Toybox

Adds a toy/soft-play/party themed dimension, with many places to explore and a boss to fight

271kdownloads
Boss Bars Reforged
23w31a

Boss Bars Reforged

Freshly redesigned and more ambitious boss bar sprites!

271kdownloads
AL's Boss Rush x Fresh Animations
1.21.8

AL's Boss Rush x Fresh Animations

A pack that makes AL's Boss Rush compatible with Fresh Animations by Fresh_LX!

268kdownloads
Medieval MC [NEOFORGE] MMC5
1.21neoforge

Medieval MC [NEOFORGE] MMC5

Version 1.21.1 | Fantasy Adventure RPG & Exploration | Quests, Bosses, Custom Content!

265kdownloads
Unknown5473lib
1.21.4neoforge

Unknown5473lib

A universal code library prerequisite for mods created by Unknown5473,Provides a Boss mob template library and screen effects..

232kdownloads
Rpg: Better Elder Guardian
1.20.1forge

Rpg: Better Elder Guardian

Makes the ElderGuardian a proper boss with custom attacks, increased health and special drops

230kdownloads
KEO RPG optimized
1.21.1neoforge

KEO RPG optimized

Keo RPG is a fully Spanish, highly optimized modpack with over 200 mods that lets you rediscover Minecraft with freedom, RPG classes, magic, and epic bosses.

227kdownloads
Better Boss Bars
1.21

Better Boss Bars

makes boss bars better and compatible to minecraft textures

207kdownloads
Infernal Mobs
1.13spigot

Infernal Mobs

Mobs can become Infernal boss mobs and drop cool loot!

206kdownloads
Aerial Hell
1.21.11fabric

Aerial Hell

Sky Dimension & Dungeons, Bosses - from 1.16.5 to 26.1.x

202kdownloads
TrollBoss
1.20.6spigot

TrollBoss

The one and only Troll plugin you will ever need! Downloaded over 875k times on bukkit!

202kdownloads
Nice Mobs Remastered
1.21fabric

Nice Mobs Remastered

Randomised mob equipment, 10 new mobs, 3 new bosses, a new late game dimension and more

199kdownloads
ApocalypseX
1.20.1forge

ApocalypseX

This mod adds a lot of new things! New gears. Dimensions. Bosses

185kdownloads
True Ending: Ender Dragon Music
1.20

True Ending: Ender Dragon Music

An optional addition to True Ending adding new boss music to the Ender Dragon fight

177kdownloads
BETTER FANTASY - Overture
1.21.1neoforge

BETTER FANTASY - Overture

Fantasy Challenging Exploration Modpack - New Dimensions - Bosses and much more!

172kdownloads
Confluence: Journey's Start (Terraria ModPack)
1.21.1neoforge

Confluence: Journey's Start (Terraria ModPack)

Explore the world of Terraria in 3D | Unique Bosses, NPC System, RPG Progression, and FTB Questing.

171kdownloads
LUMINOUS: HALLOWEEN
1.21.1neoforge

LUMINOUS: HALLOWEEN

Bring a spooky new boss to your Minecraft World!

163kdownloads
Cookiemon - Pokemon Cobblemon RPG & Cookies
1.21.1neoforge

Cookiemon - Pokemon Cobblemon RPG & Cookies

Pokemon Cobblemon RPG with 1000+ Quests, Magic, Bosses, Building and more!

133kdownloads
Boss Music Mod/Datapack
1.21fabric

Boss Music Mod/Datapack

This mod adds music that will play during epic frays against both the Wither and the Ender Dragon.

128kdownloads
Daily Boss
1.21.1neoforge

Daily Boss

Adding daily boss event into Minecraft

128kdownloads
Arda's Sculks (Ancient City Portal / Deep Dark Dimension)
1.21.1neoforge

Arda's Sculks (Ancient City Portal / Deep Dark Dimension)

Arda's Sculks mod is a mod that improves the ancient city in the game and offers the ability to open the ancient portal in the ancient city. This mod adds many deep dark biomes to the game and many boss creatures found in these biomes.

122kdownloads
Chrono Dawn
1.21.9neoforge

Chrono Dawn

Adds Chrono Dawn, a time-themed dimension with custom portals, boss battles, and time-manipulating artifacts. Supports Fabric & NeoForge.

120kdownloads
Rival Trespassers
1.21fabric

Rival Trespassers

Fight survivalist minibosses in structures - just like you!

114kdownloads
CRD Converters
1.21.1neoforge

CRD Converters

An addon for Cobblemon Raid Dens that allow Myths and Legends items + others to convert raid dens into specific bosses.

109kdownloads
GeoSmelt (Neoforge 1.21.1+)
1.21.1neoforge

GeoSmelt (Neoforge 1.21.1+)

An expansive ”vanilla” plus mod adding ores above netherite, a new boss, really cool blocks, and some sick swords!

103kdownloads
Enhanced Pokemon Boss Bars
1.21

Enhanced Pokemon Boss Bars

Stylized pixel-art boss bars inspired by Pokémon, tailored for Cobblemon and Pixelmon trainers.

100kdownloads
MythicMobs
1.21.4

MythicMobs

Create custom mobs and bosses with advanced skills, attributes, equipment, and more!

100kdownloads
Souls-like universe: Epic Fight updated
1.21.1neoforge

Souls-like universe: Epic Fight updated

Updated Version of an Addon for Epic Fight that adds Souls like mobs and Bosses to the game

98kdownloads
Multiplayer Bosses
1.21.1neoforge

Multiplayer Bosses

A server-side mod that makes boss health and loot drops scales to player count.

94kdownloads
Super Bosses
1.19.2forge

Super Bosses

Any Monster can randomly spawn as a SUPER BOSS!!!

90kdownloads
Winter update
1.21.1neoforge

Winter update

This mod adds a lot of content to winter biomes. Starting from ordinary reindeer, ending with various bosses.

87kdownloads
Brutal Nightmare : Insane Difficult
1.16fabric

Brutal Nightmare : Insane Difficult

Minecraft too easy? Try this mods with nearly 40 modifiers - settings new mini bosses, which made minecraft become hard & insane. Enhanced hostile mobs' AI & Angry passive mob. Zombie place/break blocks. Skeleton,Spider,Creeper,Enderman.

84kdownloads
EvoPlus
1.21.4fabric

EvoPlus

Auxiliary mod for PrisonEvo mode of DiamondWorld project, which includes functionality of boss timers, quick menu, hotkeys for rune sets and many more various features.

83kdownloads