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Minecraft Java 1.21 Mods

Browse 133 free mods for Minecraft Java 1.21 — popular picks include MapProtect, Planet - Border teleport, twinkle popo mod.

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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
Fools Rise Tweaks
1.21.1neoforge

Fools Rise Tweaks

Small mod for Fools Rise modpack! Added progression for modpack and some more!

41downloads
World Persistence
1.21.11fabric

World Persistence

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

41downloads
TerraLib
1.21.1fabric

TerraLib

Library for the mod "seasons" made by Elias

40downloads
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
Zurtrutium Lib
1.21.5fabric

Zurtrutium Lib

Common Library for Zurtrutium Modding

19downloads
Relocation
1.21

Relocation

A simple building relocation plugin

18downloads
RFTools Base Mod (1.21.1, 1.20.1) – Library for McJty's Mods
1.21.1neoforge

RFTools Base Mod (1.21.1, 1.20.1) – Library for McJty's Mods

RFTools Base Mod is the base mod for all tech mods by McJty. This includes RFTools Dimensions, RFTools Control, RFTools Power, Deep Resonance, XNet, and so on. Features: Dimensional Shard oregen, small amount in the overworld, more in other dimensions. The machine infuser. Base crafting materials for the other tech mods. The smart wrench. Security […]

McJtyLib (1.21.1, 1.20.1) – The Foundation for High-Tech Worlds
1.21.1neoforge

McJtyLib (1.21.1, 1.20.1) – The Foundation for High-Tech Worlds

McJtyLib is a companion mod required by all mods from McJty: RFTools, RFTools Dimensions, Deep Resonance and also by RF Lux by romelo333. Features: Acts as a required library for a large collection of mods. Allows various tech mods to function properly without crashing. Provides the necessary code for mods including RFTools, XNet, Deep Resonance, […]

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
S
1.21.11fabric

SDX's library

a library mod made by SDX. it's good for configs, optimization, settings and data!

58downloads
D
1.21.4

Database K's Dimension

The not so dependent dependency for my other Datapack that includes a simple dark dimension with no escape made of pure black concrete.

33downloads
WorldWeaver: Remastered
1.21.1fabric

WorldWeaver: Remastered

WorldWeaver Remastered is a powerful modern API and world generation library! As the successor to BCLib, it provides the essential framework for BetterEnd and BetterNether, fixing core terrain bugs and unlocking advanced data-driven dimensions!

34kdownloads
BCLib: Remastered
1.21.1fabric

BCLib: Remastered

BCLib Remastered is a powerful core library and API for Minecraft Fabric 1.21.1. It provides essential shared utilities, rendering tools, custom configs, and procedural models for BetterEnd and BetterNether. Specially optimized for modern modpacks!

33kdownloads
Craftics - Grid Based Tactical RPG
1.21.5fabric

Craftics - Grid Based Tactical RPG

We turned Minecraft into a full fledged tactical RPG! Gone are the days of exploring a world in first person, now you must enter new biomes and defeat enemies to gain resources all in a grid turn based RPG experience!!

2.8kdownloads
Biomorphosis Mod (1.21.4, 1.21.1) – Command a Mutating Swarm to Build a Living
1.21.4

Biomorphosis Mod (1.21.4, 1.21.1) – Command a Mutating Swarm to Build a Living

Biomorphosis Mod brings a living, mutating ecosystem into your world. This mod lets you control a collective mind called the Swarm. You gather biomass to build organic structures and spawn new creatures. The world changes as insect villages and new biomes appear around you. You must decide whether to fight this growing nightmare or become […]

YUNG's API (1.21.11, 1.20.1) – Explore Better Structures
1.21.11

YUNG's API (1.21.11, 1.20.1) – Explore Better Structures

YUNG's API provides shared code and tools that other mods need to work. It is a library mod that contains a collection of useful functions, especially for mods that change world generation. Features: Includes an AutoRegistration system that works with any mod loader. Offers a custom Jigsaw Manager with better performance for creating structures. Adds […]