Minecraft Java 1.21 Mods
Browse 519 free mods for Minecraft Java 1.21 — popular picks include GiantZombie, EssenceBound, Zoglin Miniboss.
Updated daily
GiantZombie
summon and battle a colossal zombie boss with customizable stats and drops!
EssenceBound
Adds 4 new bosses with special items and a crafting levelling system for 2 of them :)
Zoglin Miniboss
Makes the Zoglin into a miniboss with a powerful reward.
CobbleCatalyst
Adds Cobblemon trainer battle phases to Cataclysm boss fights, turning boss fights into hybrid combat and Pokemon battle challenges.
Mid Optimized Plus+
it's Mid Optimized but with extra mods adding new bosses , mobs , biomes and more..
Project: TitanSlayer
Slaughter Mobs and Bosses in a Doom Style
The last Soldier (TLS)
This mod adds rats, bugs, jellybears and bosses to the game
ADKM
Defeat a powerful, giant boss roaming your world to claim his legendary Scythe with +16 Attack Damage! A high-risk, high-reward challenge. (Requires GeckoLib)
VtAlters | ⭐ Advanced Boss Summoning System ⭐
Allows you to create a sacrificial altar to summon a mob
JuggernautSMP
JuggernautSMP is a competitive PvP minigame plugin for Minecraft (Paper 1.21) where one player becomes an overpowered boss — the Juggernaut — and everyone else must team up to take them down.
Inferno World
Dimension, epic boss battle, and tools inspired by a magical hell
RoyRealTimeEvents
Minecraft plugin automatically creates special events (bosses, monsters) in real time during the day
DreadWalker
A mod adding a new boss, new weapons, tools, armor, and a magic staff.
Custom Boss Zoryth AI
Zoryth AI Boss is a premium, high-performance custom boss framework for Paper (1.21.x).
Artifacts and Bosses
This mod adds new gems that can be collected from 4 new bosses
WarFmod
A mod that adds new mobs and bosses to your world, as well as new features and items.
Olympus Rush
Climb a hand-sculpted Olympus and slay its thirteen gods — God of War-style boss battles with the Blades of Chaos, and Hades waiting on his throne beneath the world.
XDL的武器1
添加了几把武器和一些生物及一个BOSS Added several weapons, some creatures, and a boss.
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.
YouTuber Block Telugu Edition
A fun Minecraft mod featuring famous Telugu YouTubers, custom blocks, and epic bosses like Evil YouTube
Minestroyer
This mod adds 13 more bosses to Minecraft.
Sculk Wrath
Sculk Wrath is a complete Warden boss overhaul datapack that transforms the Warden into a 4-phase boss fight with custom attacks, boss bar, music, configurable drops, and dramatic animations.
Rare Mob Item -warden-
The purpose of the mod called RMI (rare mob item) is to make the bosses in the game more useful.
Vitae
Vitae is a data-driven entity framework for NeoForge 1.21.1 that lets you define custom animated mobs, bosses, and NPCs through datapacks and optional KubeJS scripting.
HereMobby
A paper server plugin to create custom entities (mobs, bosses, reward items, craftable items, mounts, wild animals)
The Legend Returns
Herobrine has returned. Cursed structures, shadow clones, epic boss fight, and dark portals await. Survive the apocalypse.
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.
Zombieium
Zombieium adds configurable night-time zombie waves and an optional boss encounter with a red warning beam, fiery arrival effects, and unique drops.
Esoteric
Animations, Visual Effects, Terrian Enhancements + Structures. This pack also includes rebalancing of bosses. which makes some mobs + bosses more difficult
BossBarUltra
Modern floating health bars for mobs using Minecraft’s TextDisplay system. Lightweight, customizable, and perfect for RPG and PvE servers.
Matthew's adventure
The Hardwood Forest biome is a forest with dark hardwood trees and Ironbugs that drop iron nuggets. Players can tame a mob inspired by me using honey blocks and fight a boss named after my friend in the plains biome. Craft and discover many unique items.
MehrPinguin
A mod adding penguins, biomes, structures, rituals, and bosses – currently only available in German language.
Mob Icons+
Hostile mobs become easier to recognize at a glance with clean pixel face icons for UI elements, boss bars, and compatible minimaps.
BossHeart
A mode that makes playing more comfortable
The game Built For YOU
This modpack is somewhat "lightweight" this adds a few new mobs bosses and features have fun!
Otherplaces
Multiple dimentions with diffrent items, blocks, mobs, structures, bosses.