Minecraft Java 1.21 Mods
Browse 267 free mods for Minecraft Java 1.21 — popular picks include Cyberforged, Auction HouseX, Peaceful Silverfish.
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Cyberforged
Welcome to Cyberforged! This mod aims to add a new challenge through a dangerous dimension for players who are bored with the base game.
Auction HouseX
A fast-paced, player-driven auction house built for competitive servers. Buy, sell, and flip items instantly in a clean, high-performance GUI. Designed for Paper servers, this plugin keeps the economy moving and the profits flowing 🔥
Peaceful Silverfish
Peaceful Silverfish lets silverfish spawn from vanilla infested stone even on Peaceful. Great for Create farms and contraptions, but works perfect in vanilla too. Includes an option to mute silverfish sounds so your base stays quiet.
Chill&Stay
This is a modpack for my private smp, includes new building blocks, new foods, mobs some new bosses and enemys, a lot of QoL features, and the necessery optimanizations
Picasso
Transform your world with many new building blocks.
JustPlugin - All in One Management Plugin
Lightweight all-in-one essentials plugin for Paper, Purpur, and Folia 1.21.11+. Economy, teleportation, moderation, jail, kits, vaults, ranks, database storage, and 159+ more commands — all in a single configurable JAR.
Breached (Standalone)
Breached is a competitive Minecraft survival mod inspired by Rust, built for players who enjoy looting, PvP, raiding, and base-building. It keeps much of Minecraft’s core survival identity, but adds unique systems that force raiding/basing/PVP.
PocketHouse
A pocket dimension mod with a house that can be customized to accommodate mobs. Crafting is easy and balanced, with 1 bag and 8 eye enders around the bag in a workbench.
Five's alternative monsters
This resource pack transforms base minecraft monsters into reimagined versions inspired by some games and other media
BuilderPractice
A fast-paced building game where you create a build based on a theme, vote on others, and compete to win. (Hypixel Build Battle image)
Matikanetaunnhauser (Mambo) Character
Adds a friendly Matikanetaunnhouser (Mambo) that will follow you and defend you from hostile mobs!
BoomTNT
BoomTNT replaces boring vanilla TNT with four absolutely chaotic explosives. No block damage? Wrong. Swapping your friend's house with lava? Yes. Turning every cow into a creeper? Absolutely.
Empiremodpack
A stylish, cozy Minecraft modpack designed with creativity in mind—perfect for building, decorating, and exploring without the chaos of magic or overpowered mobs
DrownedConduitSpawnBlocker
Prevents Drowned from spawning near conduits for easier underwater building.

Polar's Petrifying Pack
A nostalgic Minecraft pack with old-style textures, a subtly unsettling atmosphere, and a great base for horror mods that enhance immersion without straying from vanilla.
[Cobblemon]: Dialyn cosmetic
Give your Lopunny a costume base on Dialyn (ZZZ's character)
No World
Wake up with no memory. Explore myhouse enter the inthewood dimension and uncover your lost past
Microtato
Casting spells, running away from monsters and building tiny castles, at least there are no scary machines to hunt you.
Project Tiger
This is a light weight w.i.p mod with new buildings and blocks
Building Competition
A Paper plugin for creating a long-term building competition server. Provides plot management and protections.
Rype's Auto Item Rename+Auction Seller
Automatically rename and sell large amounts of items with a single command. This mod is made especially for LifeStealSMP.com players, helping automate repetitive renaming and auction house selling tasks with configurable speeds and simple controls.
The Wildcaster
The Wildcaster datapack introduces a magical wand with limited uses, each casting random effects, including summoning entities, environmental changes, and player buffs. Found in Woodland Mansions, it adds unpredictability to your Minecraft adventures.
Speedy Ghasts
This datapack increases the happy ghast base speed, going even faster when you fly above the clouds, you can even use speed potions to really chase the skies!
creatifight
A new gamemode for players who want the thrill of building and fighting without worrying about damage and dying. Like creative mode, but with aggressive mobs to battle.
FurniCraft Optimized
An aesthetic Vanilla+ building modpack featuring the complete Macaw's suite with zero custom biomes. Built on a highly optimized performance stack for flawless, high-FPS gameplay even on lower-end hardware and mobile launchers.
Hoppins Backrooms Resource Pack
A resource pack that transforms several vanilla blocks into Backrooms-themed building materials. Froglights are redesigned into ceiling lights with textures on every side, while select bamboo, wool, carpet, and iron trapdoor textures are modified to better
Cozy Horizons
A cozy Minecraft modpack that expands the vanilla experience with new structures, biomes, mobs, items, and building options for a relaxing and immersive adventure.

ZenCraft
Focus Mode enhances your Minecraft experience by filtering entities (animals, items, players) and simplifying the HUD for a distraction-free building session, with an optional Pomodoro timer to manage your playtime.
Precast Structure
Add a mechanic to automate repetitive building projects.
Hyrinity
Overall content modification that alters base game. Adds new content to the game.
RoyalAuctions
A Hypixel-style Auction House built for the eco suite (EcoItems, armor, talismans, pets, and more) — with a category and item-tier browser, bids, and buy-it-now. Fully config-driven GUIs, and works standalone on any Vault economy.
The Watching World
A per-player karma score the world reacts to. Kindness (planting, taming, building) earns favor: animals approach, gifts drop, daylight healing. Cruelty earns dread: monsters hunt you and crops grow slower. Server-side, 1.21+ (Paper/Spigot/Bukkit/Purpur).
Smart Zombies
Fabric‑based 1.21.1 mod making zombies intelligent: wall‑breaking, gap‑parkour, horde spawning, skeleton turrets, creeper‑throwing, emergency escape, backup calls, item‑picking, base sabotage and variable stats & sizes.
zombieguard
this its a zombieguard mod,you can spawn a costum zombie that will patrol an era this can abe very useufel fro costum building but becarfule he can go thought walls
The Star Defender
Protect your base from phantoms and ghasts!
Elemental Storm Sovereign Data Pack (1.21.1) – Catch the Legendary Three-Headed
Elemental Storm Sovereign Data Pack adds the legendary bird fusion Thu-Fi-Zer to Cobblemon worlds. This creature combines Articuno, Zapdos, and Moltres into a single flying powerhouse with a base stat total of 640. You can encounter this rare beast across the Overworld, especially during heavy rain and thunderstorms. It brings unique rotating battle mechanics that […]