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Minecraft Java 1.21 Mods

Browse 101 free mods for Minecraft Java 1.21 — popular picks include BossesEpic — Automated Boss Events with Real HP, 13 Languages, Abilities, Vault Rewards & GUI Editor, SeasonManager, KVRLootChest.

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BossesEpic — Automated Boss Events with Real HP, 13 Languages, Abilities, Vault Rewards & GUI Editor
1.20spigot

BossesEpic — Automated Boss Events with Real HP, 13 Languages, Abilities, Vault Rewards & GUI Editor

Automated epic boss events: real HP, 13 languages, phased combat, 20+ abilities, Vault payouts +

62downloads
SeasonManager
1.20.6

SeasonManager

A powerful, Folia-native server lifecycle engine that automates seasons, phases, and grace periods for modern Minecraft networks. Providing autonomous scheduling with high-performance execution and premium visual feedback via BossBars and Titles.

58downloads
KVRLootChest
1.21

KVRLootChest

This plugin adds a custom chest event. There are three tiers of loot in the chests. The chest spawns within a 2000 block radius of the spawn point. To open it, you need to kill the boss (a zombie in diamond armor with a sword and 100 HP).

57downloads
Shwarma Adventures
1.21.1neoforge

Shwarma Adventures

An adventure-focused Minecraft modpack featuring exploration, bosses, dungeons, enhanced world generation, and a balanced progression system.

46downloads
timerpluginmutils
1.21

timerpluginmutils

Adds a fully customizable timer system to your Minecraft server! Features a global timer visible to all players, personal timers for individual players, BossBar display, and automated rules like stopping the timer when the Ender Dragon dies.

45downloads
NxControl
1.21

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.

43downloads
Timber´s Call
1.21.4

Timber´s Call

Timber’s Call adds Grimbark, an automatic woodcutting NPC, unique workstations for progression, mystical crafting, and a boss fight — all without a resource pack. Answer the call!

41downloads
Item Challenge
1.21

Item Challenge

Give your server a collective goal: collect a set amount of any item before the in-game days run out. Track progress in real time through a boss bar, deposit your items in one command, and see who contributed the most.

33downloads
Amboss Haltbarkeit / Anvil Durability
1.21.11

Amboss Haltbarkeit / Anvil Durability

Always see the remaining durability of your anvil.

24downloads
DynamicWarden
1.21spigot

DynamicWarden

An automated, high-performance Void Warden Boss Event with dynamic JSON bossbars and premium rewards

15downloads
RX-KeyAll
1.21

RX-KeyAll

A lightweight, highly optimized KeyAll plugin with dynamic BossBar countdowns and RGB support.

11downloads
Cursed Limitless Resonance Data Pack (26.1.2, 1.21.11)
1.21.11

Cursed Limitless Resonance Data Pack (26.1.2, 1.21.11)

Cursed Limitless Resonance Data Pack brings anime-inspired cursed energy powers, special tools, and dangerous bosses to your survival world. You can charge up cursed energy to strike with crushing critical hits, unleash famous special moves, and summon tough minibosses for unique drops. Every technique fits right into survival gameplay with craftable items and power progressions. […]

TNP Limitless 8 Modpack (1.21.1) – Endless Modded Journey Begins
1.21.1

TNP Limitless 8 Modpack (1.21.1) – Endless Modded Journey Begins

TNP Limitless 8 Modpack is a large Minecraft modpack that combines technology, magic, exploration, quests, and automation into one complete experience. It is designed for players who want long-term progression and many different playstyles. Features: Core Overview Over 750+ mods About 2200+ quests across many chapters Focus on tech, magic, building, exploration, and boss fights […]

Create Chronicles The Endventure Modpack (1.21.1) – Cozy Create Adventure
1.21.1

Create Chronicles The Endventure Modpack (1.21.1) – Cozy Create Adventure

Create Chronicles The Endventure Modpack is a beginner-friendly, cozy Create-focused modpack for Minecraft. It emphasizes exploration, creativity, light automation, and optional progression, with minimal recipe changes and no forced endgame pressure. The core goal is optional: collect 12 unique Ender Eyes to activate the End Portal. Each Eye is crafted from fragments earned through boss […]

Plants vs. Zombies Modpack (1.21.1) – Playing in Minecraft
1.21.1

Plants vs. Zombies Modpack (1.21.1) – Playing in Minecraft

Plants vs. Zombies Modpack is a recreation of the original "Plants Vs. Zombies" game inside of Minecraft using the Utility Engine. Features: Has 10 levels including: Bowling minigames Conveyor bosses 8 plants 5 zombies Almanac Custom naming Level select features Decompiled resource pack for easy modding Screenshots: Plants vs. Zombies Modpack Download Links For Minecraft […]

B
1.21.3

BetterScoreboard

A packet based custom scoreboard and boss bar plugin.

11kdownloads
Enhanced Raid Dens - Cobblemon Raid Dens Add-on
1.21.1fabric

Enhanced Raid Dens - Cobblemon Raid Dens Add-on

Configurable Cobblemon raid events with Alpha, Mega, Dynamax, Gigamax and Tera bosses + Wold bosses. Add-on for Cobblemon Raid Dens

11kdownloads
OtherWorlds Awakening
1.21.1neoforge

OtherWorlds Awakening

Adventure meets magic and machines — Tensura, Create, Bosses, and quests await.

9.4kdownloads
Twilight Tavern
1.21.1neoforge

Twilight Tavern

Magical, cozy cottage? Or a dark wizard dungeon? Your choice! No futuristic automation mods. The modpack is a curated mix of magical, fantasy and farm related mods with challenging, dark outside world full of monsters and bosses.

1.3kdownloads
Larry's Insane Cobblemon
1.21.1neoforge

Larry's Insane Cobblemon

Modpack focused on expanding cobblemon while providing an insane experience! Featuring tech mods, exploration mods with new boss encounters and some miscellaneous mods for QOL or fun!

1.2kdownloads
Create - The World(Arcane)
1.21.1neoforge

Create - The World(Arcane)

A High-Fantasy inspired Create centered RPG modpack, delve into the secrets of the arcane, develop engineering marvels, and face horrible monsters and bosses as you survive in a world at war.

1.1kdownloads
Just All Mods - JAM
1.21.1neoforge

Just All Mods - JAM

Jams is a modpack built for everybody you want bosses, cozy cooking and farming mods, new pets or tech mods? Well JAM has all of that plus more we have 1000+ quest in case you're new to mods come on and give it a try.

696downloads
Stellaris Rebound Mod (1.21.1) – Colonize Harsh Alien Planets
1.21.1

Stellaris Rebound Mod (1.21.1) – Colonize Harsh Alien Planets

Stellaris Rebound Mod extends Galacticraft with landable planets, harsh space weather hazards, and restored space vehicles. The mod adds multi-biome terrain to Mercury, Venus, Mars, the Moon, and the Asteroid Belt. Players face harsh temperatures, solar flares, and Mars dust storms that affect machines and solar panels. It also introduces boss fights, autonomous mining gear, […]

Amphibian Alchemy Mod (26.1.2, 1.21.1) – Farm Rare Minerals and Boss Drops
1.21.1

Amphibian Alchemy Mod (26.1.2, 1.21.1) – Farm Rare Minerals and Boss Drops

Amphibian Alchemy Mod transforms frogs and slimes into a renewable resource farming system. You feed minerals and materials to slimes, feed those slimes to your frogs, and harvest special Froglights that smelt back into items. The mod lets you breed frogs with higher stats, set up automated habitats, and even produce rare boss drops peacefully. […]

Dusk of the Elders Mod (26.1.2, 1.21.1) – Conquer Ancient Keeps and Awaken
1.21.1

Dusk of the Elders Mod (26.1.2, 1.21.1) – Conquer Ancient Keeps and Awaken

Dusk of the Elders Mod brings an ancient dungeon challenge to your world. It adds the Ancient Keep, a massive underground structure full of combat trials and valuable rewards. You can battle unique enemies, collect special keys, and wake up a giant machine boss for rare loot. This mod gives you a tough combat adventure […]

Titan Questline Apex Modpack (1.21.1) – Scorching Sun Hardcore Survival
1.21.1

Titan Questline Apex Modpack (1.21.1) – Scorching Sun Hardcore Survival

Titan Questline Apex Modpack traps you in a deadly wasteland where a giant burning sun never sets and destroys anything touching daylight. You must hide underground, purify scarce water, and follow hundreds of quests to conquer tough bosses. Over two hundred mods combine dangerous heat survival with deep tech machines and powerful character upgrades. Features: […]

Lithic Vault Trials Modpack (1.21.1) – Conquer Underground Trials And Tech
1.21.1

Lithic Vault Trials Modpack (1.21.1) – Conquer Underground Trials And Tech

Lithic Vault Trials Modpack traps you deep inside a world made entirely of solid stone where you must dig, build, and survive. Talk with helpful holographic Echo NPCs, breed resource chickens, and power up a giant ancient machine to uncover lost technology. Defeat tough dungeon bosses and master high-tech reactors to craft godlike endgame gear. […]

Brainium Mod (1.21.1, 1.20.1) – Battle Parasitic Brain Bosses
1.21.1

Brainium Mod (1.21.1, 1.20.1) – Battle Parasitic Brain Bosses

Brainium Mod unleashes a parasitic alien infection upon your Minecraft world. It starts when a mysterious meteor crashes from the sky, bringing tiny brain creatures that look for hosts. These parasites drain energy from other mobs to grow into powerful bosses. You must fight back using new guns and special armor before the alien growth […]

Dwarven Automatons Mod (1.21.11, 1.20.1) – Battle Steam-Powered Bosses
1.21.11

Dwarven Automatons Mod (1.21.11, 1.20.1) – Battle Steam-Powered Bosses

Dwarven Automatons Mod brings an ancient mechanical civilization back to life in your world. It fills deep underground caves and floating void islands with hostile machines powered by steam and gears. You get to explore massive industrial ruins, fight smart robots, and collect rare metal to craft new weapons. Features: Shared Loot System: Every player […]