Minecraft Java 1.21 Mods
Browse 558 free mods for Minecraft Java 1.21 — popular picks include Military Tanks & Helicopters, Create: Cogs & Cataclysm, War weapons.
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Military Tanks & Helicopters
Drive tanks and fly helicopters with full interior views, weapon systems, and fuel mechanics
Create: Cogs & Cataclysm
Immerse yourself in Create: Cogs & Cataclysm, a modpack where mechanical ingenuity meets high-stakes adventure. Built around the Create mod’s extensive automation and L_Ender’s Cataclysm's impressive dungeons and boss battles.
War weapons
Medieval styled weapons and war utilities.
Not Coldown
Lets the admin enable or disable player attack cooldown, switching between classic 1.8.9 combat and the modern system.
Open Parties and Claims: Warfare
Turn OPaC claims into battlefields with chunk wars, raid rules, claim protection, and Xaero/Create support.
Reaper's Scythe
Introduce the legendary Reaper's Scythe, an end-game weapon with permanent combat buffs, a devastating right-click AoE attack (Wither II), and an on-kill speed boost. Highly configurable.
Fabulous Blades
Adds new swords with different types and mechanics. Compatible with Better Combat for unique attack styles!
Legacy Sword
Restores the classic sword spam-click combat from pre-1.9 versions.

Atomics Client
Atomics Client is a customizable Fabric PvP client that adds clean visuals, totem pop customization, combat overlays, stats tracking, and useful quality-of-life tools.
Axe and Sword Switcher
Auto Tool Switch is a client-side Minecraft mod that automatically switches between sword and axe during PvP combat based on whether the opponent is using a shield.
AntiGriefPlus
AntiGriefPlus is a Minecraft mod that protects specific blocks (like chests, doors, and structures) from explosion damage caused by creepers, TNT, or other sources. It keeps your buildings safe without disabling combat or gameplay mechanics.
Combat Visuals!
A mod that adds basic Impact Frames!
SickSheet's Practice Bot
A Fabric mod adding a highly customizable bot and a kit system for combat and PvP practice
Combat Weaponary Plus
A Custom Item Plugin Built By Kurulus, Tons of features like Custom things, Custom tools, Custom armor, Install the plugin to see yourself, Supports 1.21 x 1.16
Survival Not Guaranteed
Dive into an expansive Minecraft modpack that blends challenging survival mechanics like temperature and thirst with extensive exploration of overhauled dungeons and new biomes, all while offering dynamic combat, magical mastery, and complex automation.
CPvP Utilities
CPvP Utilities is a Fabric Client-side mod designed to enhance the Crystal PvP experience, providing a set of utilities that streamline and simplify common combat interactions, all configurable through an in-game ClickGUI.
Money SMP
💰 Money SMP: Lightweight PvP economy, no jobs, just combat. ⚔️
[SimplePetsAddon] PvP Addon
Checks for when the owner of a pet is in combat and will remove all their current pets

aicheye's Combat Tagging
Lightweight fabric server plugin to make PvP fairer and prevent combat-logging.
Vanilla Combat Improvements
Adds 6 new weapons with custom abilities and effects that refresh vanilla combat.
DinoBrik's Spears
Spear weapon in Minecraft! Bonus melee reach and throwable. Comes with custom spear enchantments alongside classic sword enchantments for an enhanced combat and utility experience.
Flaxa Combat – Advanced PvP System with Combat Tag
A clean and optimized combat system plugin that prevents combat logging, blocks unfair escapes, and adds modern combat mechanics with full customization and smooth performance for PvP servers.
Iridium Enchants
Providing a new and exciting aspect of PVP to your server via new enchantments and unique combat.
CombatGunSSS
Adds 45 unique guns to Minecraft, each with custom damage, recoil, fire rate, and reload mechanics, enhancing combat with balanced gameplay, multiple weapon types, and flexible customization for varied playstyles
the scythe
This simple Minecraft mod introduces an exciting new weapon: the scythe. Designed primarily for PvP combat, it is fully compatible with both single-player and multiplayer modes. You don't need any other mod to operate it
Tensura Epic Fight Compatibility
A datapack that lets tensura weapons use epic fight's combat system
AutoShieldStun
🛡️ AntiShield Mod A lightweight client-side utility mod that improves combat efficiency by helping you deal with shield users more effectively.
Streive's Weapons
Streive's Weapons mod adds diverse firearms with realistic mechanics and customization options to Minecraft. Craft, customize, and wield powerful guns for enhanced combat and exploration experiences.
Swidget's Hit Sounds
A lightweight mod that customizes Minecraft hit sounds, allowing you to replace default combat audio with cleaner, louder, or more satisfying sound effects.
ColorableLib
SuperbWarfare library for easy vehicle coloring.
DZEconomy
A practical multi-currency economy plugin for Paper, Spigot, Folia, and Purpur with Money, MobCoins, Gems, LuckPerms multipliers, combat tagging, and SQLite/MySQL storage.
Dominatus : Refinement
Aim for more RPG like with RNG and improve a combat implementation Monster Crit System

CombatLogM
Powerful combatlog system for your minecraft server
Combat Numbers
See how much damage you deal, with style! Different indicators for different damage types.
Refined Combat
Rebalancing pvp in minecraft focusing on pvp mechanics in vanilla whilst improving on it with new enchants and mechanics Explosions rebalanced rare enchants added combat logging system added rebalanced elytra
BedrockCombatCompat
Cross-Platform Combat Optimization for Crossplay Minecraft Servers