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Minecraft Java 1.21 Mods

Browse 1,562 free mods for Minecraft Java 1.21 — popular picks include MonsterScaler, ThicMobKai - Dungeon, Boss and Mob RPG System, Project Adamski.

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MonsterScaler
1.2.1

MonsterScaler

MonsterScaler adds dynamic difficulty to your server! Monsters level up based on time/distance, gaining boosted stats, enchanted gear, unique debuffs, and triggering server-wide events like Blood Moons and Invasions.

45downloads
ThicMobKai - Dungeon, Boss and Mob RPG System
1.16spigot

ThicMobKai - Dungeon, Boss and Mob RPG System

A premium dungeon, boss, and mob progression plugin with EN/VI support.

44downloads
Project Adamski
1.21.1fabric

Project Adamski

Project Adamski is a work in progress magic mod currently featuring a fully functional Meteor Strike staff. The ultimate goal of this mod is to build a full RPG magic system where players hunt mobs and explore the world, and get stronger with stafffs.

44downloads
Common-Freeze
1.21

Common-Freeze

Paper plugin to freeze mobs while retaining their perks!

44downloads
Glowplug's Magical Mod
1.21.8neoforge

Glowplug's Magical Mod

This is an RPG-styled mod, adding several classes and a tool progression

43downloads
SantumSpawn - MMORPG Invisible Mythicmobs around the Player
1.21spigot

SantumSpawn - MMORPG Invisible Mythicmobs around the Player

Spawn invisible Mythicmobs around the player via Packets | ClientSide like Wynncraft

43downloads
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.

42downloads
HonHoan - Soul Ring RPG
1.20.6spigot

HonHoan - Soul Ring RPG

Turn every mob into a Spirit Beast. Hunt Soul Rings, master 42 Soul Skills, collect Spirit Bones

41downloads
NPCSpeak
1.20

NPCSpeak

AI-powered Minecraft NPCs that actually negotiate, persuade, interrogate, and quest, not just chat.

39downloads
QinhCoreLib
1.21

QinhCoreLib

Shared core library for the Qinh plugin suite. Unifies item sources (CraftEngine, ItemsAdder, Nexo, MMOItems, MythicMobs & more), attributes, custom-block & model bridges, and scripting. Required by QinhItems, QinhSkills, and other Qinh plugins.

37downloads
Fishy Folk
1.21

Fishy Folk

An Origins mod data pack with merling spinoff origins

37downloads
Alone - Disabling mob generation
1.21

Alone - Disabling mob generation

By enabling this datapack when creating the world, you will no longer encounter entities that were invoked when generating chunks. They can still be summoned by commands, summoning eggs or spawners, skulk screamers and some other ways.

37downloads
Ace Up The Sleeve
1.17

Ace Up The Sleeve

Drop to 4 hearts and trigger your Last Stand — summoning Guardian golems and granting powerful buffs to turn the tide of battle.

37downloads
Ravenborne
1.21.1neoforge

Ravenborne

Class based medieval fantasy rpg mod based by Ravenborne theme!

35downloads
Patcore mob attribute
1.21.1neoforge

Patcore mob attribute

This mod simply adds attributes and a leveling system to mobs, similar to ARK.

34downloads
Bedrock's Skeleton
1.21.8neoforge

Bedrock's Skeleton

Adds a new mob: a Skeleton armed with a minigun instead of a bow. Summon it with a simple structure and watch chaos unfold.

34downloads
lightning rod zombie
1.21.1neoforge

lightning rod zombie

A zombie that can summon lightning and heal itself.

32downloads
[BHB] Immortal Happy Ghasts DP
1.21.6

[BHB] Immortal Happy Ghasts DP

Makes happy ghasts immortal, gives them resistance 5

31downloads
Wandering Trader Summoning Ritual
1.21.9

Wandering Trader Summoning Ritual

Convert a villager to a wandering trader instead of waiting!

27downloads
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
✨ WildlifeRarities ✨ [1.21.X] ⭐ V1.2 ⭐ Animal Rarities | Custom Rewards | Hunter Journal |
1.21spigot

✨ WildlifeRarities ✨ [1.21.X] ⭐ V1.2 ⭐ Animal Rarities | Custom Rewards | Hunter Journal |

WildlifeRarities is an RPG-focused plugin designed to make hunting more interesting.

24downloads
⭐ [1.21 – 26.2] ShieldRising | RPG Shield Progression & Ability System
1.21spigot

⭐ [1.21 – 26.2] ShieldRising | RPG Shield Progression & Ability System

Block mobs, absorb their power and unlock evolving shield abilities with a full RPG progression syst

23downloads
silverfishes become fishes (and bassicly immortal in water)
1.21.1

silverfishes become fishes (and bassicly immortal in water)

this mod makes it that silverfishes die outside of water, and get weaker to, and in water they get sronger faster and more helath, and they also get set to 10 helath every time they touch the water, but if thwey leave they die, also in block = in water

23downloads
Trigger Craft
1.21.8neoforge

Trigger Craft

Are you familiar with World Trigger? Wished there was a mod for it for Minecraft? Well, that's exactly what this mod does! Not another magic RPG mod ;)

21downloads
WildlifeRarities
1.21

WildlifeRarities

WildlifeRarities is an RPG-focused plugin designed to make hunting and exploration more engaging and rewarding on your server. It is perfect for servers with collectors, progression systems, or economy-based gameplay.

18downloads
20TPS
1.20.5

20TPS

20TPS is an all-in-one performance toolkit that stabilizes your server by limiting lag machines, stacking mobs, and fixing common exploits.

16downloads
Mob Power DP
1.21.7

Mob Power DP

This data pack allows you to level up every time you defeat a mob, granting you various enhancements upon leveling up.

16downloads
Hyvora Combat Mobs
1.20spigot

Hyvora Combat Mobs

Custom Mobs • Abilities • Bosses • Rewards • RPG Combat

14downloads
LightGlow - Custom Hex Glow & Flying Animal Effects
1.12spigot

LightGlow - Custom Hex Glow & Flying Animal Effects

Customize Glow colors with HEX and summon flying animals around players.

13downloads
MoPets | Custom inventory pets with leveling and actions.
1.13spigot

MoPets | Custom inventory pets with leveling and actions.

MoPets is a plugin about Pets in Inventory, this pets can execute rewards and have a leveling system

12downloads
PetX ✦ Ultimate RPG Wolf Companions [Revive, Classes, Skills, Leveling] 1.21.x
1.21spigot

PetX ✦ Ultimate RPG Wolf Companions [Revive, Classes, Skills, Leveling] 1.21.x

Transform vanilla wolves into powerful RPG companions with magic skills, passive perks, and classes!

12downloads
Kione
1.21.1neoforge

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.

11downloads
Hyvora Combat Mobs
1.20spigot

Hyvora Combat Mobs

Custom Mobs • Abilities • Bosses • Rewards • RPG Combat

11downloads
Sentries & Sentinel
1.21.11

Sentries & Sentinel

Later-game enemy for servers that have no more common dangerous enemies.

7downloads
MMOBlock
1.19.4paper

MMOBlock

Unblock the Fun, One Click at a Time with MMOBlock

2downloads
Cobblemon Path to Legends Data Pack (1.21.1) – Hunt Legendary Monsters
1.21.1

Cobblemon Path to Legends Data Pack (1.21.1) – Hunt Legendary Monsters

Cobblemon Path to Legends Data Pack adds unique spawning structures for Cobblemon and MegaShowdown. It generates special temples and caves across your world where you can summon powerful legendary creatures. You can explore these hidden places and use special items to wake up rare monsters like Groudon, Rayquaza, or Arceus. This pack gives you a […]