Minecraft Java 1.21 Mods
Browse 58 free mods for Minecraft Java 1.21 — popular picks include SSaVS MOD, Biomes O' Cataclysms, CorruptionCraft.
Updated daily
SSaVS MOD
Server Security and voting system - add custom ui (not inventory) and way to PAPER servers block ANY mods/rp in client. Support ONLY for 1.21.4
Biomes O' Cataclysms
This mod transforms Vanilla Minecraft into a challenge! One by one, all biomes will be destroyed, so try to complete the game before the end of the world!
CorruptionCraft
A plugin that challenges players. Random events can occur. (no Spoilers!)
Row on Lava
Includes a new enchantment obtainable from the table/villagers/loot named "Fiery" which when equipped on boots can make players abled to row on lava in the nether making the journey easier.
V's Lucky Block Engine
A Command driven Lucky block engine for 1.21.10
CasterOS
CasterOS is a cross-platform Minecraft magic plugin for Paper and Sponge servers. It features immersive spell casting, dynamic magic mode, and easy spell management with YAML files—making it simple to customize and expand your server’s magical experience.
Projection Boundary
Why use a boring invisible wall when you can turn the world border into a glitching, collapsing simulation?
how low can you go
Rewards you for going deeper in the world with increase spawn rate of ore except diamonds
LightChatWelcomer
Simple spigot plugin to display custom join messages
GLB lib
A library mod that allows for glb 3d models to be used for minecraft entities
Decraftable
lets you decraft items for your resources back.
LibraryCube
LibraryCube is a Minecraft plugin that generates an infinite, explorable library of unique chambers, each filled with deterministically arranged blocks based on a specific address.
twinkle popo mod
it adds twinkle popo realistic pikachu and realistic hellokity
Earwax
EarWaxers is a silly Fabric mod where pressing P on a stick or blaze rod “cleans” your ear and leaves edible earwax on the tip (hurting you in the process, and lighting you on fire if it’s a blaze rod). Cook that wax through burnt, crispy, very crispy, a
Ultimate Step
UltimateStep is an all-in-one Paper server management plugin featuring a powerful rank system, configurable scoreboard, customizable tablist, and complete punishment tools including warn, mute, ban, kick, unmute, and unban. Lightweight, modern, and easy
Player Mutations
A behavioral evolution system that mutates players based on their playstyle. Every cycle (default 3 days), the plugin analyzes player behavior and triggers mutations that fundamentally change how they play.
Craftable Uncraftables And More!
This mod adds all the uncraftable thing to minecraft and a few extra things.
Custom Collision Box
A datapack library that can create custom collision/interaction box with management.
Aura Nexuses
Grant abilites based on large-scale constructions. Grant permissions dynamically.
Version Detector
An API for datapacks to detect your Minecraft Version
QuickWhisper
A terrifying Minecraft horror mod made on NeoForge that adds procedural jumpscares, creepy ambient sounds, and an immersive custom glitch menu.
AgriCraft Create Compat
Adds harvester support for AgriCraft crops and integrates Create automation with AgriCraft's crop progression and weed mechanics