Minecraft Java 1.21 Mods
Browse 316 free mods for Minecraft Java 1.21 — popular picks include Loler's Gems, AI Friend by Kurzer, Peaceful Silverfish.
Updated daily
Loler's Gems
Adds mob gems that have certain abilities and/or perks! (WIP)
AI Friend by Kurzer
AI Friend adds a new NPC to Minecraft that communicates with you using real artificial intelligence via the OpenRouter API. Ask it anything, give it tasks — it will respond, move, and interact with the world!
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.
NoCollision
NoCollision allows you to disable or fine-tune collision between players, mobs, and players vs mobs.
my-bot-mod
Carpet-style fake players (bots) for Fabric 1.20-1.20.4 - spawn & control bots, non-blocking A* pathfinding, a Command Baton to send them anywhere, skins, inventory & ender chest access, and bots that persist across restarts.

Sculk Eye
Adds a new Sculk Eye Block - scans entities of a given type in a given radius and emits redstone signal based on the count
RealMobScale
Realistic animal scaling based on real measurements | light-weight plugin.
Harmony I
A seamless and enjoyable modpack that transforms Minecraft with well-balanced development, fresh mobs, and mechanisms. Bronze progression, explore structures, complete quests, and dive into a world where every mod tastes like vanilla.
RecipeSpawnerMob
Show recipe For crafting mob spawner
Skylife
A Skyblock with the goal to make everything different (at least a bit)
Dr.Stone : Legacy Of Petrification
A French-made Minecraft mod inspired by Dr. Stone, featuring pottery, depetrification, and more.
Lethal Breed
Adaptive predators that break through walls and build bridges.
Items, Crafts & World of the Realms of Runeterra
This project introduces all the items, blocks, abilities and other gameplay mechanics not related to the world generation provided by the Core Package of Realms of Runeterra: A Tale of Relative Dimensions
Biznesmod
This mod adds new biomes, a new villager proffesion, new mechanics (upgradable abilities, collecting iron dust to make iron ingots, etc...), new custom structures (10+), a TNT cannon which shoots tnt where you look and some new redstone components.
just let me do it
A Copper Golem based mod powered by OpenRouter AI that can build and interact with your world. Inspired by Purplers video.
Reawakened End
An end update for Minecraft finally! Created by Pjluna and ShadowB.
RadialHotbarMOVE
A console-style radial item wheel inspired by Animal Crossing and GTA V to redefine your inventory navigation.
StaySmall
A Lightweight plugin to keep your mobs small and cute forever!
Enlivened End
brings me life to the end with new blocks, biomes, items, and mobs, all in a vanilla-style way
Economy Machina
Economy Machina turns everyday gameplay into a living economy. Mine a diamond, catch a fish, tame a horse, survive a creeper — every action has a chance to pay out. No commands to learn, no tasks to complete. Just play.
Player Detector
Redstone block that detects if a player is standing on it
CREEPER ANTI LAG
Advanced anti-lag plugin featuring TNT protection, intelligent item cleanup, mob optimization, lag machine detection, and real-time TPS monitoring.
Resourceful Sheep
A customizable mod that turns sheep into walking resource generators.
Renewable Survival
Makes All Items Renewable. Adds crafting or mob drops.
THE HORRORS BUT BETTER
THE HORRORS adds 4 new biomes more blocks more crafting tables like the de-radioactivator and the improved smelter and the fabricator and it adds more mobs and it is only to get updated more! updates: the start ,NUCLEAR WARNING!!!!!
Teleport Spyglass
Sneak + Use Teleport Spyglass to instantly teleport you and your animals back to your bed.
Cobble Helper
Cobble Helper adds a helpful mob that automates cobblestone generation by working directly at a Cobblestone Generator. The mob harvests cobblestone for you, turning a simple early game setup into an efficient automation solution without complex machines.
Project Tiger
This is a light weight w.i.p mod with new buildings and blocks
ArmadilloSleeper
Sends Armadillos at XP Farms into Sleep to make TPS better but still make XP Farms very good!
Chicken Jockey Plus
Adds commands to summon different variant jockeys
Void_Filler
Void Filler is a technology‑focused Minecraft mod built with an engineering‑driven approach to architecture, system design, and scalability.
Petrova Wastelands
Petrova Wastelands: An Interstellar Odyssey In a universe where the stars are fading, heat is no longer a resource—it is your only hope for survival.

THIS
Port of the Chickens mod, as well as roost!
Copper Golem Reforged
Plugin that adds configurable copper golem upgrades with separate diamond and netherite behaviors
Nonsense
A new dimension with unique and creative biomes ...
UniversalMobFoundry
New generation of generators! You can buy monsters, simulate their loot, and upgrade the generator.