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Minecraft Java 1.21 Mods

Browse 27 free mods for Minecraft Java 1.21 — popular picks include Armageddon, DivineRPG, EliteMobs.

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Armageddon
1.21.1neoforge

Armageddon

A highly configurable overhaul of Minecraft's way of progressing through the game : bosses, RPG-like, new mechanics, multiplayer compatibility, weapons, ores... !

1.5Mdownloads
DivineRPG
1.21.1neoforge

DivineRPG

8 New Dimensions ♦ 115+ New Mobs/Bosses ♦ Hundreds of New Blocks and Items ♦ Unique Weapons and Armor

551kdownloads
EliteMobs
1.21.4

EliteMobs

Minidungeons, Arenas, Bosses, Custom Loot, Quests, MMORPG progression & more!

69kdownloads
Create Echoes of the Great Derailment
1.21.1neoforge

Create Echoes of the Great Derailment

Rebuild the Machine Age after the Great Derailment in a steampunk Create modpack with quests, staged progression, automation, colonies, bosses, exploration, custom mechanics, powerful machines, and a world full of secrets.

5.1kdownloads
Manifestation of the souls
1.21.1neoforge

Manifestation of the souls

Manifest your soul as a stand, kill bosses, follow quest lines and find structures

4.4kdownloads
KinglyBosses
1.7.2

KinglyBosses

KinglyBosses is a Minecraft plugin for managing custom bosses. It allows summoning powerful bosses, generating custom items, and enabling player spectating. It also offers features like boss lists, spawn zone management, and easy configuration reloading.

3.9kdownloads
Create: Cogs & Cataclysm
1.21.1neoforge

Create: Cogs & Cataclysm

Immerse yourself in Create: Cogs & Cataclysm, a modpack where mechanical ingenuity meets high-stakes adventure. Built around the Create mod’s extensive automation and L_Ender’s Cataclysm's impressive dungeons and boss battles.

2.1kdownloads
Diary of an 8-Bit Warrior
1.21.1neoforge

Diary of an 8-Bit Warrior

Experience Aetheria like a Terrarian! Complete quests, kill bosses, and level up your skills! Maybe you'll even meet Runt and his friends…

2.0kdownloads
Bosscraft 2: Remake
1.21.8neoforge

Bosscraft 2: Remake

Bosscraft 2: Remake is an unofficial project inspired by Sthullen's famous mod for older and outdated versions of Minecraft. This project takes the iconic mechanics of the classic mod and integrates them into modern versions of the game.

1.5kdownloads
Theosis
1.21

Theosis

Plugin-ready RPG survival with loot, gems, bosses & biomes. Thesis-style modularity. Multilanguage Apotheosis-inspired

1.3kdownloads
Limitbreak
1.21.4

Limitbreak

Minecraft transformed into a roguelite wave-survival RPG with classes, relics, bosses, and permanent progression.

945downloads
Ivar's Bosses
1.21.1neoforge

Ivar's Bosses

Ivar's Bosses is a mod that introduces formidable bosses to the game, featuring unique attack patterns and special summoning rituals. These ancient creatures will unleash their wrath upon anyone who dares disturb their eternal slumber.

806downloads
Ominous Wither
1.21.1

Ominous Wither

Adds a thrilling boss fight experience, summoned by building the Wither with Bad Omen.

768downloads
Elexir [CSD]
1.21.1neoforge

Elexir [CSD]

Step into ELEXIR - This modpack is magic, automation and adventure. Here you can explore the world as well as magic or mechanisms to make life easier. Ancient artifacts, bosses other worlds are created for gameplay variety

764downloads
Alternative Twilight  (Remastered version)
1.21.1neoforge

Alternative Twilight (Remastered version)

Added more mechanisms to the bosses of Twilight Forest, making it more time to prepare for them

605downloads
Easter Holidays
1.21

Easter Holidays

Transform your server into an Easter event with egg hunts, rare bunnies, stats, bosses, quests, and more.

476downloads
Elysian Horizon
1.21.1neoforge

Elysian Horizon

A beautiful modpack with a lots of custom mobs, bosses, tools and mechanicts

315downloads
NexusMobs
1.21

NexusMobs

NexusMobs is a comprehensive RPG plugin that transforms your Minecraft server by introducing over 20 unique bosses

301downloads
Summoners
1.21.5fabric

Summoners

Turns ordinary mobs into mini-bosses that summon reinforcements.

242downloads
UltraRituals-Free
1.20.5

UltraRituals-Free

Offering altar system to summon bosses, free version

177downloads
BossBarUltra
1.21

BossBarUltra

Modern floating health bars for mobs using Minecraft’s TextDisplay system. Lightweight, customizable, and perfect for RPG and PvE servers.

100downloads
Anti Magick: Bosses of Mass Destruction
1.21.1neoforge

Anti Magick: Bosses of Mass Destruction

Optional Anti Magick integration that suppresses selected supernatural boss actions and summons

56downloads
Anti Magick: The Twilight Forest
1.21.1neoforge

Anti Magick: The Twilight Forest

Optional Anti Magick integration that suppresses Twilight Forest portals, magic abilities, summons, and selected boss actions

51downloads
randomitems-mod
1.21.1fabric

randomitems-mod

Adds /randomitems, /randommobs, /randomweapon, /randomarmor, /randomtool and /randomquest commands that periodically give random items, spawn random mobs, swap your gear, or assign 5-minute random quests with a boss bar and personal sidebar.

39downloads
MashStrikeDrops
1.21

MashStrikeDrops

The plugin is aimed at event servers, crates-style mob encounters, grind zones, boss-lite content, and custom reward systems without needing MythicMobs or a larger RPG stack.

25downloads
Aethelgard Odyssey
1.21.1fabric

Aethelgard Odyssey

Aethegard Odyssey is a medieval Minecraft modpack blending RPG mechanics with immersive exploration. It features custom dungeons, class-based progression. Expect challenging survival, magic, and epic boss fights.

1.1kdownloads
Ironbound Combat Tactics Mod (1.21.11, 1.21.1) – Master RPG Classes
1.21.11

Ironbound Combat Tactics Mod (1.21.11, 1.21.1) – Master RPG Classes

Ironbound Combat Tactics Mod brings class progression, special talents, and fresh combat mechanics into your game. You can battle bosses that respawn after defeat, collect legendary gear, and build your character with active and passive abilities. Enemies grow stronger as you advance, dropping better loot along the way. The mod also reworks enchanting rules and […]