Minecraft Java 1.21 Mods
Browse 283 free mods for Minecraft Java 1.21 — popular picks include SPMod, Temporal Horizons (Time Travel & Time Paradoxes), NLYB: Looting and Exploration.
Updated daily
SPMod
Reworked receiving of iron, making bed and a lot of new content
Temporal Horizons (Time Travel & Time Paradoxes)
A time travel mod that lets you explore the time travel and its consequences in the same world.
NLYB: Looting and Exploration
Shrink and store entire dungeons, temples, and villager houses then loot them safely from your base. (Never Leave Your Base)
Isolated Creative
Lets players teleport to a completely isolated creative world that is separate from the main world

Neko
A paper plugin that provides many features such as to create custom items or blocks
Bingus SMP Content
Extra content made for the Bingus SMP.
Smeshariki: Otherworld
A mod featuring diverse space content in the spirit of Galacticraft.
Heartcore Mode
A Gamemode easier than Hardcore but harder than Survival. Ten Lives, lose a heart on death. Enjoy! Icon was originally made in Icons8 but then altered by me.
Reawakened End
An end update for Minecraft finally! Created by Pjluna and ShadowB.
Better Campfire Cooking
It makes campfires better by adding new recipies, doesn't impact performance much.

The Pandoras Box
Pandoras Box adds a mysterious block that periodically generates random items from every installed mod. + New dimension
Sellmenu
Plugin for creating stores for your server Easy to use plugin supports itemadder itemedit itemtag plugins Must have vault
Drop & Grow
Automatically plants dropped saplings. A great quality-of-life feature for clean inventories and farm automation that fits perfectly into vanilla survival
SimpleChunks
An easy-to-use chunkloader with a modern GUI, teleport system, and secure permission management — ideal for farms, redstone, and automated systems.
Overgrow
Let the world OVERGROW itself.
Corex
Modern, Paper-exclusive compiled scripting engine
CyberWorldReset
Easily reset a world with a scheduler or a specific time/date and more!

Elomod
An expensive survival & tech mod adding cameras, monitors, thermal vision, new ores, and more !
UltraEvolution
🧠 Transform Minecraft mobs into intelligent, adaptive civilizations that learn, evolve, raid, build secret bases & upgrade gear. No more dumb mobs — ever.
Gardon's Minerals Pack
New More Ores and Gems to Minecraft!
World Border Alert
This plugin alerts you whenever you get closer to World Border
Projection Boundary
Why use a boring invisible wall when you can turn the world border into a glitching, collapsing simulation?

Ashen World
A Fallout-inspired survival mod for NeoForge that introduces radiation, mutations, contaminated environments, chem crafting, and dangerous evolutionary changes to your Minecraft world.
Titanroot Skies
A Minecraft society modpack with a focus on mechanical engineering, exploration, and rpg elements.
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
Enlivened End
brings me life to the end with new blocks, biomes, items, and mobs, all in a vanilla-style way
Skylife
A Skyblock with the goal to make everything different (at least a bit)
Netheroreoverlay
This is oreoverlay but in the nether, works exactly the same
xDPearlCoolDown
xDPearlCooldown improves gameplay balance by limiting how often players can use Ender Pearls, making combat more strategic and fair while staying lightweight and easy to use for server owners.
Void_Filler
Void Filler is a technology‑focused Minecraft mod built with an engineering‑driven approach to architecture, system design, and scalability.
Safety is Nowhere
Dreams are real and so are nightmares. The world is corrupted, find the source of abnormalities.
Under The Seas
Discontiued For Certain Amount Of Time A new gameplay to minecraft by exploring the darkness of the sea
Builder - Ai
🧠 AI Builds Turn imagination into reality. Let AI build structures directly in your Minecraft world using Gemini or Claude.
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!!!!!

Project: Nuclei
Adds uranium ore, lead ore and an enrichment process for making uranium rods. Also adds graphite rods (crafted with coal), a nuke, a radioactive seperator and various crafting components. In general this is a (kinda) scientific industrial progression mod.
PLASTIC CRAFT
A unique expansion that introduces versatile plastic materials, custom building blocks, and tools to upgrade your Minecraft survival experience.