Minecraft Java 1.21 Mods
Browse 519 free mods for Minecraft Java 1.21 — popular picks include NxControl, ArenaWaves, Voidshard_abyss.
Updated daily
NxControl
NxControl is an advanced staff plugin that lets OP players control players or mobs using simple keybinds, with GUI, bossbars, and freeze system built-in. It’s lightweight, powerful, and perfect for moderation, trolling, or cinematic gameplay.
ArenaWaves
Simple wave arena with bossbar progress and vanilla mobs.
Voidshard_abyss
The Voidshard abyss mod adds the voidshard abyss dimension, bosses and arena battles.
Boss Weapons Mod
This is my first mod, so it's probably not very good. It adds some weapons for each mob that is generally considered a boss (Wither, Ender Dragon, Warden, and Elder Guardian).
Daniels Amazing Uranium Mod
This mod adds uranium, a boss named Daniel, and MUCH MUCH more! enjoy :-)
Tenebris - Advanced Dungeon System
Free advanced dungeon system with bosses, keys, rewards, stats, MythicMobs and PlaceholderAPI suppor
Giant Boss
giant bossfight datapack using vanilla minecraft
Endless Instability
This mod changes many stages of Minecraft, adding new blocks, tools, and bosses. It's not yet finished and is in early development. It's 70% translated into English and 100% into Russian.
Everything Bossbar UW add-on
This Datapack adds Bossbars for every mob
The Invisible Cheater
There's a new boss in the world
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.
Attrition
A world that answers your progress. 600+ mechanics: bleeding, thirst, curses, diseases, rebuilt bosses and a world that learns from every mob you kill.
Dragonfight Updated
This datapack is an improvement of the dragon fight. With a new mini-boss and even more.
Exto
This mod adds a unique horror mod boss that has a rare chance of spawning in the dark forest, the badlands etc.
Voyage of Peril
This modpack adds new structures, animations, items and blocks, realism and difficulty to the vanilla version of Minecraft through improved mobs and bosses, and much more.
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.
Calamity Bosses
20 NEW bosses that will shift the power changes in your world, adding custom item rewards and custom blessings to ease your fare through this treacherous world.
Hyvora Combat Mobs
Custom Mobs • Abilities • Bosses • Rewards • RPG Combat
Hyvora Combat Mobs
Custom Mobs • Abilities • Bosses • Rewards • RPG Combat
Boss Cannon
The Boss Cannon Inspired By WMC
Endmode 2 | Terraria Style Datapack
Terraria inspired overhaul to progression. New bosses, items, etc.
![Epic Mobs Rework - Lite [1.16+]](https://pub-2ae937f770284535a96c3330f91236aa.r2.dev/thumb/spiget/506056.webp)
Epic Mobs Rework - Lite [1.16+]
Custom mobs, bosses, raids for Spigot and Paper
Apex Raid Protocols Data Pack (1.21.1) – Hunt Raid Dens and Catch Rare Monsters
Apex Raid Protocols Data Pack extends Cobblemon Raid Dens with tough boss battles, fresh creature abilities, and unique regional monsters. You can track down special dens built with calcite and skystone across your world to challenge these powerful foes. Each encounter brings competitive movesets and rare skill combinations that test your battle tactics. Defeating these […]
Tensura Gateways Data Pack (1.21.1) – Battle Relentless Fantasy Bosses
Tensura Gateways Data Pack adds custom wave-based trials for Gateways to Eternity. It brings mobs from Tensura: Reincarnated and powerful bosses from Tensura: Not Enough Bosses into the portal battle system. You can test your gear across ten distinct portal challenges packed with themed enemies. Each battle pits you against waves of fantasy creatures for […]
Cobblemon Interface Embossed Legacy Modded Resource Pack (1.21.11, 1.21.1)
Cobblemon Interface Embossed Legacy Modded Resource Pack extends Cobblemon Interface Embossed Legacy by adding matching textures for extra community mods. This pack repaints inventory screens, item menus, and modded pop-ups using the same embossed textures and dark color palette. It keeps your game looking unified when you load extra creature-catching addons into your world. You […]
Orbital Wolf Cannon Data Pack (26.2, 1.21.11) – Summon Massive Armies
Orbital Wolf Cannon Data Pack equips you with special fishing rods that summon massive waves of powered-up war dogs. You can call in dozens or even hundreds of loyal wolves to overwhelm hostile monsters, defend your base, or crush tough bosses. Every summoned dog comes with extra speed, fire resistance, and boosted attack strength to […]
Tensura Cataclysm Loot Data Pack (1.21.1) – Earn Rare Magic Drops
Tensura Cataclysm Loot Data Pack adds items from the Tensura: Reincarnated mod to mob drop tables in L_Ender's Cataclysm. Defeating powerful bosses and dungeon monsters rewards you with elemental essence, cores, shards, and magic ores. Each Cataclysm structure matches its thematic element, giving you clear targets when farming specific materials. This integration helps connect combat […]
Blue Depths Resource Pack (26.2, 1.21.11) – Lively Ocean Creatures
Blue Depths Resource Pack supplies custom models, textures, and visual assets for a lively aquatic world. It covers fresh and saltwater habitats by giving distinct looks to predators, small fish, workstations, and a dangerous sea boss. Players can see each stage of a creature growing up, from tiny babies to full adults. Features: Supplies custom […]
Tensura Craftables Data Pack (1.21.1) – Forge Rare Monster Drops
Tensura Craftables Data Pack adds useful crafting options for Tensura: Reincarnated and vanilla Minecraft. It gives you straightforward ways to make rare materials, armor pieces, and utility items directly at your crafting table. The pack also introduces fresh uses for elemental shards and boss drops so nothing in your inventory goes to waste. Features: Lets […]
Professor Porker's Legendary Dungeons Data Pack (1.21.1)
Professor Porker's Legendary Dungeons Data Pack extends Cobblemon with large challenge structures inspired by iconic creature landmarks. It fills your world with massive multi-floor ruins full of tough wild encounters and hidden puzzle chambers. Players must manage team health, solve environmental puzzles, and battle through monster rooms to reach high-level legendary bosses. The data pack […]
Passive Mobs Twlight Re Aggro Data Pack (1.21.11, 1.21.1)
Passive Mobs Twlight Re Aggro Data Pack fixes boss fights for the Passive Mobs mod. It forces creatures from the Twilight Forest to attack you again. This solves a problem where bosses like the Lich become impossible to beat when they stop fighting. Features: Forces all creatures and bosses in the Twilight Forest to attack […]
Dragoncraft Drygmy Blacklist Data Pack (1.21.1) – Earn Boss Loot Through Real
Dragoncraft Drygmy Blacklist Data Pack patches balance issues in the Dragoncraft modpack. It stops players from using Drygmy charms to easily farm certain powerful bosses and useful NPCs. By blocking these specific mobs, the game stays fair and challenging. You will have to fight big enemies the normal way instead of sitting back and collecting […]
Excalibur Bosses'rise Support Resource Pack (1.21.11, 1.20.1)
Excalibur Bosses'rise Support Resource Pack repaints the monsters and items from the Bosses'Rise mod. It changes the textures so they match the medieval fantasy style of the main Excalibur pack. Features: Medieval Monsters: Gives the five giant boss monsters a brand new fantasy look. Changes the textures of every new block from the boss mod […]
Kult Craft Core Data Pack (1.21.1, 1.20.1) – Fight Custom Bosses Without a Long
Kult Craft Core Data Pack extends the Attribute Setter Mod by balancing health and damage numbers for several other mods. The pack lowers the health of specific boss-like monsters so they do not take forever to defeat in regular survival gameplay. Features: Changes the health stats for specific creatures from different mods so they fit […]
Cataclysm Compat Data Pack (1.21.1, 1.20.1) – Giant Bosses Smash Through Custom
Cataclysm Compat Data Pack adds compatibility for L_Ender's Cataclysm. It makes the giant bosses and items from that mod work well with blocks and creatures from other popular add-ons. Bosses get the ability to smash through new types of blocks during fights. It also updates certain items so they stick properly when they hit targets. […]
BB's Bosses of Mass Destruction Tweaks Resource Pack (1.21.11, 1.20.1)
BB's Bosses of Mass Destruction Tweaks Resource Pack restyles the monsters and items in the Bosses of Mass Destruction mod. It changes the textures and 3D models of the big enemies so they look totally different. This pack gives the giant creatures a fresh coat of paint to fit a custom art style. Features: Updated […]