Minecraft Java 1.21 Mods
Browse 279 free mods for Minecraft Java 1.21 — popular picks include Project: Nuclei, Kaucjomat (Bottle Deposit Machine), Void_Filler.
Updated daily
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.
Kaucjomat (Bottle Deposit Machine)
Immerse yourself in the world of deposit-free bottles and cans and get something back for yourself ;) #🇵🇱⛰️
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.
Nonsense
A new dimension with unique and creative biomes ...
Custom Border Plus
Full customize world border with effects and warning
Dimensional Ring
Transport between Dimensions with the power of the Dimensional Ring!
ResetConfirm
Use /reset confirm to reset your whole server with one click
Blitz Mod
Blitz is an alpha-stage industrial progression mod built around packet-sized electricity.
Very Much of Create
A massive Create-focused modpack that expands automation, transport, and industry to the extreme. Featuring dozens of Create add-ons, new biomes, food systems, and performance optimizations — perfect for building huge factories, trains, and mechanical worl
Energy Evolution
an energy evolution tech tree mod
Safety is Nowhere
Dreams are real and so are nightmares. The world is corrupted, find the source of abnormalities.
No Nether RoofSpawns
A lightweight Fabric mod that intelligently controls mob spawning on the Nether roof
PGCVisibility
PGC Visibility is a Paper/Bukkit plugin for Minecraft that controls player visibility based on ranks and permissions.
Under The Seas
Discontiued For Certain Amount Of Time A new gameplay to minecraft by exploring the darkness of the sea
MapProtect
MapProtect is built to work alongside automated map rotation systems, allowing FFA servers to maintain clean, reusable arenas without requiring manual resets.
LeashedMobsTeleport
Teleport leashed entities across dimensions and allow leashing any type of mob with advanced protection.
SD5
SubData 5, the official Minecraft Datapack as seen on SubBurban 5.
Omnia
This project adds a massive, carefully curated 350+ mod experience. Omnia combines next-gen aesthetics (Distant Horizons, Shaders), deep farming/building mechanics, and epic exploration into one uncompromising, hardware-hungry sandbox.
AgonyMinus
Adds various gimmicks and items and critters and whatnot
More Collectables by Memontanik
This Project Adds More Stuff to Collect, Craft, Use and Break! It could be a fun experience with this Project!
Beyond The Simulation
Grow a Lab Grown Brain that Connects Redstone Beyond the Distances, Dimensions, Worlds, Servers and Realities? (yes, connect redstone to real life)
AltWorld
AltWorlds is a Minecraft plugin that lets players create and manage personal worlds with a GUI.
Better Auth
BetterAuth is a lightweight and powerful authentication plugin for Minecraft servers. Protects against bots, hacks, and unauthorized access. Supports all server cores and versions from 1.8.9 to 26.x.
PLA
This mod adds plastic into minecraft! A dirty desert, a 3D printer for special crafting, and tupperware!
tincraft 2
a improved version of the original tincraft mod
FastArena
FastArena provides fast, lag-free, and fully automated arena resets
javaTNT
javaTNT – Realistic TNT explosions with craters, just like vanilla Java, optimized for Paper servers.
WardRegion
Region protection plugin for Minecraft 1.21 with wand-based selection, GUI management, whitelist access, flexible flags, particle previews, and MySQL storage.
WXJK's Simple Pocket Dimensions
This project adds 3 tiers of pocket dimensions that you can craft and enter. each player will have their own if they craft it.
Fight Back
Fight Back against Horror Mods with OP armour that grants effects like flight and invulnerability, tools that one-shot and insta-mine everything, a new dream-like dimension, new achievements, and more!
SkyfunUtils
An Ex Nihilo-inspired Slimefun addon that bridges the gap in finite world genre like Skyblock with custom sieving, hammering, and resource generation mechanics.
HollowScanner
HollowScanner is a Minecraft 1.21.4 Bukkit plugin that adds a handheld scanner item to help players detect nearby caves and dungeons underground by providing vibration feedback via sounds and particles.
Legacy Console World Sizer
Adds finite world sizes inspired by the classic console versions.
ElraRTP
Community-maintained fork of the RTP plugin with support for Minecraft 1.21+
Big Globe - Immersive Engeneering
Datapack adding Immersive Engeneering ores