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Minecraft Java 1.21 Mods

Browse 134 free mods for Minecraft Java 1.21 — popular picks include Animal Pens, Moonlit Performance Enhancement Module, [SUC]Surival Useful Circuit生电全家桶.

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Animal Pens
1.21.11neoforge

Animal Pens

Reduce lag and keep your animals neatly stored while maintaining full interactivity!

4.2Mdownloads
Moonlit Performance Enhancement Module
1.20.2forge

Moonlit Performance Enhancement Module

A optimization mod for Forge/NeoForge that overhauls Minecraft’s core event system. Eliminates reflection bottlenecks to accelerate event processing, enables instant language switching, and adds the /killmobs command to instantly remove all hostile mobs wi

127kdownloads
[SUC]Surival Useful Circuit生电全家桶
1.21.10fabric

[SUC]Surival Useful Circuit生电全家桶

生电全家桶 An advanced Minecraft survival redstone and automation modpack featuring Carpet and Masa mods.

120kdownloads
Civillis Technology Compatibility
1.21.1fabric

Civillis Technology Compatibility

Adds compatibility between Civilis and various tech mods.

114kdownloads
XP Stream
1.21.1fabric

XP Stream

Absorb XP orbs faster without clumping, no XP loss, same vanilla feel

101kdownloads
InstaRestock
1.21fabric

InstaRestock

Instant Restock or Insta Restock makes villagers infinite restock

90kdownloads
Mobs Blocker
1.21.8neoforge

Mobs Blocker

Disable the spawning of specific mobs in Minecraft

87kdownloads
MojoLauncher FPS | Butterium Mobile
1.21.8fabric

MojoLauncher FPS | Butterium Mobile

Optimization/FPS and quality of life. A client-like performance pack with custom menus/in-game HUD - now for mobile phones

51kdownloads
AsguhoServer
1.21.4fabric

AsguhoServer

Simply a really optimized server with the tools you need to build awesome contraptions. This modpack include mods such as carpet, syncmatica etc.

30kdownloads
Progressive Mob Wave Activations - PMWA - Day/trigger-based control of mob spawning!
1.20.1forge

Progressive Mob Wave Activations - PMWA - Day/trigger-based control of mob spawning!

Progressive Mob Wave Activations PMWA - Limit any mobs based on day number, registered mob kills, and distance from world centre

25kdownloads
Create: Dimension, Steamworks Realm
1.21.1neoforge

Create: Dimension, Steamworks Realm

Create: Dimension, Steamworks Realm introduces a brand-new mining-focused dimension, designed for automation and large-scale resource extraction. This world is filled with rich veins of ores

25kdownloads
Pojav Mobile
1.21fabric

Pojav Mobile

Pojav Mobile is a modpack for phones that allows you to optimize the process and add innovations for playing both multiplayer and single-player mode. Supports 1.21 on Fabric with useful mods for optimization and for convenient game on the phone.

20kdownloads
Lusk
1.20.6

Lusk

Modern, user-friendly skript addon, perfect for beginners and experienced developers.

16kdownloads
PlayerProgress
1.16

PlayerProgress

PlayerProgress is a Minecraft datapack that introduces a leveling system. Earn UP from activities like mining and combat to level up and gain new abilities and rewards.

16kdownloads
PerformanceX
1.19fabric

PerformanceX

Struggling with LAG??? Look no further! PX is an All-in-one server performance suite - 50 modules including item/mob despawn timers, AI throttling, lag machine detection, auto backups, Discord webhooks, Geyser support, and more. 1.8.8-26.2.

14kdownloads
Elden Kingdom
1.21.1neoforge

Elden Kingdom

Explore the enhanced Minecraft world with The Warseed—new mobs, advanced storage, and immersive magical and medieval landscapes, all centered on the Create mod.

12kdownloads
Essential PVP Utilities
1.21.11fabric

Essential PVP Utilities

This mod contains many features to give you an advantage when fighting. Contains Fast Block Placements, Wind Charge Optimizer, [Beta] Crystal Optimizer, Faster Strafing and much more.

11kdownloads
NMI - server side mods only
1.21.3fabric

NMI - server side mods only

This is a collection of over ✨150+✨ server side mods that enhance your gameplay with voice chat, factions, economy, seasons, dungeons, buildings, mobs and much more. 🌌

11kdownloads
Raycasted Anti-ESP
1.21.4

Raycasted Anti-ESP

AntiESP; culls hidden entities, players and tile entities. Blocks Pie-Ray and Freecam. Formerly known as Raycasted Entity Occlusions/REO.

10kdownloads
MTSAntiCheat
1.21

MTSAntiCheat

This anti-cheat ensures fair gameplay by verifying client mods and textures, blocking hacked clients and unauthorized tools, and giving server owners full visibility and control to keep their SMP secure and competitive.

8.4kdownloads
TradingPlus+
1.21.5neoforge

TradingPlus+

Enhances trading by adding over 280 new trades for villagers, providing a richer and more varied gameplay experience.

7.3kdownloads
MC-Reality Mod
1.21.4

MC-Reality Mod

this is a mod for Minecraft that seeks to transform the game experience into something closer to real life. It includes elements such as needs management (hunger, health, energy), an economy system, work, and the ability to interact with other player

6.7kdownloads
VillagerLobotimizer
1.21.11

VillagerLobotimizer

A plugin to lobotomize villagers stuck in a trading hall. Perfect for SMPs looking to increase performance without sacrificing gameplay!

6.6kdownloads
All Of Utility 2
1.21.11fabric

All Of Utility 2

Redstone tech, carpet+addons, exploration, visual, QOL, building tools.

6.2kdownloads
Horror OneBlock
1.21.1neoforge

Horror OneBlock

OneBlock survival with horror mobs, dwellers, guns, shaders, and Create automation.

5.4kdownloads
Custom Clear Lag
1.21.4neoforge

Custom Clear Lag

Optimal Fluidity, Enhanced Experience

5.2kdownloads
RandomDirtDrops
1.21

RandomDirtDrops

RandomDirtDrops is a fun Minecraft data pack that makes breaking dirt blocks drop completely random items from the entire game — from diamonds to dragon eggs! Perfect for chaotic survival challenges and OP item speedruns.

5.0kdownloads
Simple Animal pens
1.21.11fabric

Simple Animal pens

A simple datapack that allows to store many animals in one block to reduce lag on the server. also available as datapack

4.4kdownloads
INFERNO ADVENTURES
1.21.11fabric

INFERNO ADVENTURES

This modpack includes new world generation, new rpg classes, new structures, new weapons, new mobs and animals, new foods and ways to cook them, battle ships, dragons, new accessories and much more!

3.7kdownloads
Mob Stacker Advanced
1.21.1fabric

Mob Stacker Advanced

Mob stacker mod with breeding support, etc.

3.3kdownloads
Dong Dong's random creation
1.21.1neoforge

Dong Dong's random creation

magic and energy,new ore,new dimension,new tool and weapon type.

3.3kdownloads
SitOnEverything
1.21.11neoforge

SitOnEverything

Sit on almost any block or entity with configurable seat positions, vanilla presets, and quick hotkey support.

3.3kdownloads
Rine Time
1.21.1neoforge

Rine Time

Explore | Choose Your Class | Battle Challenging Mobs | Build | Decorate | Grow Crops | Automate Everything

3.1kdownloads
CobbleMaster
1.21.1neoforge

CobbleMaster

The official Cobblemon: Mega Showdown modpack — competitive battles, tech automation, and endless exploration, all in one.

3.1kdownloads
Better Left Click
1.21fabric

Better Left Click

Allows you to use left click bind like normal but not lose out on the competitive and survival advantage of using a keyboard key.

2.5kdownloads
PySpigot
1.16

PySpigot

A Python scripting engine (plugin) for Minecraft servers running Bukkit or one of its forks (Spigot, Paper, etc.).

2.4kdownloads