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Minecraft Java 1.21 Mods

Browse 64 free mods for Minecraft Java 1.21 — popular picks include XMyIsland, CorruptionCraft, Slime Tweaker.

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XMyIsland
1.17

XMyIsland

A comprehensive island management plugin that brings robust protection, intuitive GUI management, and economy integration to your Minecraft server.

244downloads
CorruptionCraft
1.21

CorruptionCraft

A plugin that challenges players. Random events can occur. (no Spoilers!)

231downloads
Slime Tweaker
1.21neoforge

Slime Tweaker

Small mod that adds a gamerule and config to change the size of spawned slimes.

227downloads
Aran's Discord Presence
1.21.11fabric

Aran's Discord Presence

A lightweight, customizable Discord Rich Presence mod for Fabric. Features a built-in settings menu to toggle Server IP, biomes, dimensions, and player heads on your Discord status.

178downloads
EditVillagers Plugin
1.21.5

EditVillagers Plugin

The easiest way to create a Trader in Minecraft!

169downloads
Projection Boundary
1.21

Projection Boundary

Why use a boring invisible wall when you can turn the world border into a glitching, collapsing simulation?

162downloads
Sellmenu
1.20

Sellmenu

Plugin for creating stores for your server Easy to use plugin supports itemadder itemedit itemtag plugins Must have vault

158downloads
CyberWorldReset
1.8

CyberWorldReset

Easily reset a world with a scheduler or a specific time/date and more!

152downloads
how low can you go
1.21.1neoforge

how low can you go

Rewards you for going deeper in the world with increase spawn rate of ore except diamonds

145downloads
Materials Lib
1.21fabric

Materials Lib

Create materials easily

144downloads
LibVilNam
1.21.1fabric

LibVilNam

Cross-mod village name generation compatibility library. „Welcome to [YOUR VILLAGE NAME HERE], village-chief-sama! UwU”

142downloads
Wildborne - Worldgen & Data Tweaks
1.18.2

Wildborne - Worldgen & Data Tweaks

This is a specially designed Modded DATA pack to implement worldgen/tag/data tweaks for the upcoming Wildborne Modpack!

142downloads
Entity Block
1.21.5fabric

Entity Block

Adds the Entity Block to make creating custom structures easier

112downloads
HeadDropDimensions
1.21

HeadDropDimensions

This a Plugin that Drops heads based on chance pvp or pve and u can disable in each dimension or increase or decrease the chance in each dimension

92downloads
LibraryCube
1.21

LibraryCube

LibraryCube is a Minecraft plugin that generates an infinite, explorable library of unique chambers, each filled with deterministically arranged blocks based on a specific address.

68downloads
MapProtect
1.21

MapProtect

MapProtect is built to work alongside automated map rotation systems, allowing FFA servers to maintain clean, reusable arenas without requiring manual resets.

67downloads
Planet - Border teleport
1.21.1neoforge

Planet - Border teleport

Border-teleport mod: teleports entities crossing world borders (±326) to opposite side. Perfect for 1:326 Earth maps. Open-source (remix allowed, but must keep code open).

65downloads
twinkle popo mod
1.21.4neoforge

twinkle popo mod

it adds twinkle popo realistic pikachu and realistic hellokity

63downloads
LiveJava
1.20

LiveJava

a VS Code-powered Web IDE that lets you build multi-class, hot-swappable native Java plugins instantly with zero reloads and automatic dependency injection.

49downloads
Large Structure Lib
1.21.1neoforge

Large Structure Lib

Library for large structures, including enormous jigsaw structures.

43downloads
World Persistence
1.21.11fabric

World Persistence

A fabric mod that adds more immersion to the static minecraft world.

41downloads
Craftable Uncraftables And More!
1.21.4neoforge

Craftable Uncraftables And More!

This mod adds all the uncraftable thing to minecraft and a few extra things.

38downloads
Really Cooking
1.21.8neoforge

Really Cooking

Cooking in Minecraft has always been simple, but not anymore!

35downloads
Enemy Tracker
1.21.8neoforge

Enemy Tracker

Time to Detect the Threat and Enemies!

35downloads
Tom's Loot (Dp Edition)
1.21

Tom's Loot (Dp Edition)

This datapack adds a variety of loot tables and can be used by other mod developers for structure mods and other mods with loot tables as a basis. Datapack Edition

20downloads
Relocation
1.21

Relocation

A simple building relocation plugin

18downloads
R
1.21.1neoforge

RevelationaryDimensions

A simple addon to Revelationary which adds support for locking dimensions.

196downloads
P
1.21neoforge

PaleoLib

A simple mod to provide the basis for Paleontology in Minecraft.

102downloads