Minecraft Java 1.21 Mods
Browse 337 free mods for Minecraft Java 1.21 — popular picks include Elysian Horizon, NexusMobs, Grandia Dungeons [Modpack].
Updated daily
Elysian Horizon
A beautiful modpack with a lots of custom mobs, bosses, tools and mechanicts
NexusMobs
NexusMobs is a comprehensive RPG plugin that transforms your Minecraft server by introducing over 20 unique bosses
![Grandia Dungeons [Modpack]](https://pub-2ae937f770284535a96c3330f91236aa.r2.dev/thumb/modrinth/115224.webp)
Grandia Dungeons [Modpack]
A dark fantasy dungeon roguelike modpack with bosses, classes, cursed loot, magic, custom UI and atmospheric progression.
Summoners
Turns ordinary mobs into mini-bosses that summon reinforcements.
idleProgress
🛡️ Level up stats, master RPG classes, and explore a world full of quests! 🌲 Realistic landscapes and new bosses.
NeoAdventure
Just a modpack for quick play with buddies, lots of different bosses, multiplayer loot system, less focus on item storage or structure building, more focus on magic and item upgrading...
Hearthvale
A variety kitchen sink modpack designed to allow all kinds of players to enjoy. Explore dimensions, fight bosses, farm all sorts of crops, create automation machines, or transform the world with powerful magic.
Yarlan
Yarlan is a 16× RPG resource pack for servers: cohesive weapons & armor, custom mob/BOSS visuals, accessories, crops, and skill icons/UI. Activates on mc.aelris.cn (Java 1.21.1). First load may take a few minutes.
Bros Cooked
Fun vanilla like modpack, adds bosses, ores, and MANY MANY enchants (also you can become nearly unstoppable)
UltraRituals-Free
Offering altar system to summon bosses, free version
dungeoncraft-r
DungeonCraft is a modpack that brings the Minecraft Dungeons experience into Minecraft with new camera, dungeons, animations, and bosses.
GiantZombie
summon and battle a colossal zombie boss with customizable stats and drops!
The Choppa Age Update
This mod adds Choppas, Chopper Golems, Choppa Chests, and a new Choppa Golem boss to Minecraft. There are new items such as the cleavers, and a new extremely common biome called the wastelands.
WildFrontierr
WildFrontier is a wilderness survival & RPG adventure modpack for Fabric 1.21.1. Explore stunning terrain, battle bosses, level up your skills, and thrive in a dangerous world solo or with friends.
BQ BossBars
Lightweight addon to Beauty Quests plugin that let's you use bossbars for your quests
Holiday blocks
An immersive RPG exploration modpack featuring enhanced visuals, atmospheric sound, challenging bosses, and dynamic world generation, all optimized for smooth performance and engaging long-term gameplay.
VtAlters | ⭐ Advanced Boss Summoning System ⭐
Allows you to create a sacrificial altar to summon a mob
Cobblemon YZ
Cobblemon pack filled with QoL/Performance mods. The included server has ALL pokemon, PvE trainers, bosses/raids, quests, hunts, breeding, outbreaks and more!
Harrowing Hells (Data Pack)
[NOW SURVIVAL SUMMONABLE] Adds the Cinderscourge, a highly developed boss entity with a diverse arsenal of attacks at its disposal. Usable in mob battles.
BossBarUltra
Modern floating health bars for mobs using Minecraft’s TextDisplay system. Lightweight, customizable, and perfect for RPG and PvE servers.
![Lord of Craftery | The Ultimate Eldritch RPG [1.21.11]](https://pub-2ae937f770284535a96c3330f91236aa.r2.dev/thumb/spiget/165686.webp)
Lord of Craftery | The Ultimate Eldritch RPG [1.21.11]
22 Unique Pathways, Sanity System, Alchemy, Custom Bosses & Spirit World Dimension.
Raijin's Wrath
Unleash the wrath of Raijin — a Fabric adventure of thunder-forged gear, lightning-touched foes, summonable bosses, sacred shrines, and an in-game compendium guiding your ascent.
ryoumod
Get ready for the ultimate journey! ⚔️ This modpack combines an epic RPG experience with brutal challenges: face colossal bosses 👹 and explore completely remastered Nether and End dimensions that will blow your mind 🌌. If you’re into tech, master advance
Anti Magick: Bosses of Mass Destruction
Optional Anti Magick integration that suppresses selected supernatural boss actions and summons
Attack Mastery
Grindy attack skill progression! Kill levelled mobs to level up your Attack Mastery (max 200), gaining up to +1000% damage. Bossbar tracks XP — perfect for RPG servers with Levelled Mobs!
Anti Magick: The Twilight Forest
Optional Anti Magick integration that suppresses Twilight Forest portals, magic abilities, summons, and selected boss actions
Soul Powers
A comprehensive RPG Soul system with unique abilities, progression, and bosses.
ThicMobKai - Dungeon, Boss and Mob RPG System
A premium dungeon, boss, and mob progression plugin with EN/VI support.
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.
Boss The Eternal Warden | ⚠️ Difficulty: EXTREME
Death is just the beginning... Witness true immortality
The RED KING
This is a mod made with Autoforge. It contains a BOSS that can be naturally summoned called "The Red King".
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.
Boss Baby Disc 11
Adds felfeb's boss baby song over disc 11 (request by s_0laris)
Hyvora Combat Mobs
Custom Mobs • Abilities • Bosses • Rewards • RPG Combat
Hyvora Combat Mobs
Custom Mobs • Abilities • Bosses • Rewards • RPG Combat
Kione
Boss-style ability kit for a private SMP: homing skulls, a reflection shield, speed burst, auto-revive, summons and a server-side siege system. Abilities are bound to one account.