Minecraft Java 1.21 Mods
Browse 2,773 free mods for Minecraft Java 1.21 — popular picks include Heaven's & Hell's Armors, Size Potions, NucleCore.
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Heaven's & Hell's Armors
Adds Heaven's and Hell's Weapons and armor.
Size Potions
Size Potions adds a Potion of Normalization that temporarily resets any player or entity to default scale. Health scales dynamically with size to keep gameplay balanced.
NucleCore
NucleCore is an ultra-light PR survival plugin that introduces the complete management of a nuclear sector.
SizeClock
Size doesn't matter when you have imagination. Размер не имеет значения, когда есть воображение.
Vow of Return
A keep Inventory enchantment
Enchant when jump
This mod make it so ANY item you are holding can be enchanted with ANY enchantment to level 255 !!!

Trial-DUNGEON
RPG progression authority: 23 stats, 84 perks, a unified magic tree, and an endless procedural Trial Dungeon. NeoForge 1.21.1.
Wasteland Artifacts
Wasteland Artifacts is a powerful Paper plugin that adds a complete artifact system: custom items with unique effects, multi-block altars for crafting, blueprints, dungeon loot, mob drops, an artifact bag (/bag), and full configuration via YAML files.

Zombie Syringe
a syringe that can transfer zombie (husk,drowned) blood to villagers
PeaceSMP
A server-driven alignment mod introducing an advanced Karma tracking system, and game-changing combat abilities for survival multiplayer.
Numberous
mod that add math to minecraft
ZombieVillager
Turns Zombies into Villager Zombies
Handfull of Moss
This project adds a set of tarot cards!

Fly Potion
Plugin for 1.21 Paper, Bukkit, and Spigot servers that lets players brew potions of flight (Elixir of Flight) using the dried ghast.
1 Tap Kill
Give selected players the ability to instantly kill allowed mobs or players with a normal melee hit. (Troll plugin)
Hollow Knight Reimagined: HollowPlayer
brings the magical abilities and mechanics of Hollow Knight into Minecraft.
Realistic Heights
Makes your real length, your minecraft length.
EnchantRework
This plugin reworks the mechanics of Bane of Arthropods and Smite enchantments, making them strategically important
Crazy Damage
Advanced PvP enhancement plugin with damage multipliers, totem limiter, and anti-farming protection for balanced competitive gameplay.
Anti Magick: Bosses of Mass Destruction
Optional Anti Magick integration that suppresses selected supernatural boss actions and summons
Expedition X
Expedition X is a minecraft mod for neoforge 1.21.8 that overhauls the vanilla progression system with new resources, challenges, and adventures!
starwars-galaxy
StarWarsGalaxy is a Minecraft Spigot/Paper plugin currently in development that aims to deliver a Star Wars RPG experience with factions, Force abilities, lightsabers, planets, missions, and economy systems
Beacon Overhaul Continued
An unofficial fork of Beacon Overhaul updated to 1.21.4 ( and newer), introducing a tier system and new effects like long reach and nutrition.
Mixispotions
This mod adds new potions with new effects, that i make for fun!
Magi Mirrou
Use magic mirror to teleport to your home!
MendingMaster
Repair your tools with your own experience levels using a simple command.

Potion Dipping
Apply your potion effects to your weapons!
SBack
This minecraft paper/spigot lets players go back to their death location by just clicking a message or by typing /back, its a simple lightweight plugin
living water
Now you take damage when you're not in water
OpenRouter Chatbot
OpenRouter Chatbot is a powerful and highly configurable Spigot plugin that integrates the OpenRouter AI API into your Minecraft server.
ArslaanCraft
Introduces random blocks, items, and soon-to-be-added tools for a fun & chaotic twist on gameplay.

Titan Potions
This Mod Adds in potions that will turn you into a Titan!
Arcane Classes
Four classes, never-before-seen abilities, a mana system that punishes spammers, a trust system for allies, and a class trading system - Perfect for team based SMPs, or events.
Down With Magic
Down with enchantments! Down with potions! Boycott magic!
Wood Staff
A simple staff that lets you conjure up wood on the go!
Cursed Coin
A cursed item of unknown purpose. Rarely dropped by zombies and skeletons. Use it… if you dare.