Minecraft Java 1.21 Mods
Browse 91 free mods for Minecraft Java 1.21 — popular picks include Void Pressure, Giant Attribute Tweak, twinkle popo mod.
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Void Pressure
A flexible NeoForge framework for modpacks, providing a global pressure system to trigger fully configurable events.
Giant Attribute Tweak
Changes the Giant Mob attribute to make it compatible with mods that adds IA
twinkle popo mod
it adds twinkle popo realistic pikachu and realistic hellokity
Adventurers' Guild
This mod adds an adventurer’s guild! You can customize the tasks yourself (even items from other mobs).
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.
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.
RTN's Economy Library
Server-side economy library with rewards for killing mobs, kill combos, top lists and a developer API. Vault-style economy for mods in Minecraft.

RPG Dialogue
The definitive dialogue system
Two-Dimensional Foil
A mod that adds a two-dimensional foil weapon from The Three-Body Problem. Drop it to collapse blocks and creatures into an irreversible, mirror-like 2D plane within a configurable radius. Requires Fabric API.
Pixel Combat
Pixel Combat is a professional, zero-dependency PvP combat plugin built for competitive Paper 1.21 servers.

RPG Errands
Villagers who want something
Chrysalis Mod (1.21.4, 1.21.1) – A Framework to Customize Game Mechanics
Chrysalis Mod is a library that other mods need to work correctly. You usually only need to install it when another mod lists it as a requirement. This mod provides a shared set of tools and features, like systems for camera shakes, custom music in structures, and a way to pick up mobs in buckets. […]
QuickWhisper
A terrifying Minecraft horror mod made on NeoForge that adds procedural jumpscares, creepy ambient sounds, and an immersive custom glitch menu.
ExtraHitboxes
Add extra hitboxes from geckolib and blockbench
Gravitation
Easily change the world's gravity
Dolphin's SpearSmp plugin
This plugin is a remake of Dolphin's SpearSmp plugin.
HazentouveLib Mod (1.21.1) – Cast Multi-School Spells with Ascended Armor
HazentouveLib Mod provides shared magic systems, spell schools, and equipment classes for addon mods. It acts as a core base that adds shared templates for spellcasting mobs, multi-school armor sets, and magical weapons. Other addons rely on this framework to run smoothly and share spell mechanics across different modded worlds. Features: Includes three core spell […]
Databank Mod (1.21.11, 1.21.1) – Add Custom Animations and Giant Multiblock
Databank Mod provides specialized rendering tools, custom model setups, and sound systems for modpacks and custom projects. It acts as a core library built to handle visual effects, multiblock mechanics, and massive world structures. Features: Loads custom post-processing shaders directly into the game. Lets creators add animated models for blocks, items, and mobs with mesh […]
LegendRelicLib Mod (1.21.1, 1.20.1) – Power Custom Slashblade Combos
LegendRelicLib Mod supplies shared tools and reusable code for other mods. It packs in systems for slashblade mechanics, tag setups, and delay timing controls to cut out repetitive background steps. Other mods rely on this library to run their custom weapon actions and timing routines properly in your game. Features: Provides built-in systems for custom […]