Minecraft Java 1.21 Mods
Browse 141 free mods for Minecraft Java 1.21 — popular picks include KnightTowns, Hard Spawners, TreexCastle.
Updated daily
KnightTowns
A lightweight plugin for managing towns, claiming land, assigning ranks and protecting areas with XP and level integration.
Hard Spawners
Makes spawners spawn mobs if broken, primarily made for use with dungeon mods
TreexCastle
Durable blocks that drop loot. Gui support
Descent Dimension
Datapack that adds a new, late game, looter-dungeon dimension.
ViMo
This mod adds classes, magic, weapons inspire by Castle Crashers
AssasinsMonarchs
A medieval factions plugin with unique races, custom abilities, and a dynamic crown system that lets players fight for leadership and control of their faction.
MIA RPG Client
Welcome to the ultimate Minecraft RPG experience! Our server combines classic survival gameplay with deep RPG mechanics, challenging dungeons, and endless exploration opportunities.
Mia RPG Server
Welcome to the ultimate Minecraft RPG experience! Our server combines classic survival gameplay with deep RPG mechanics, challenging dungeons, and endless exploration opportunities.
Empyreum SMP
Empyrm Weapons adds powerful mythological weapons inspired by Greek gods to the Empyrm SMP — a scripted Minecraft server centered around divine kingdoms, corruption, and legendary combat. Wield weapons blessed by Zeus, Hades, Artemis, Ares, Hephaestus, and
[CDM] Caffeine Dungeons Mod
A mod that adds many QoL additions to the DungeonDodge minecraft Server
Shadow Addons
Adds shadow-themed blocks, tools, enchantments, dungeons, and custom challenge spawners.
MagicStructure
Add trees, dungeons, new buildings, and flying islands from schematics to your world generation.
Dungeons Tower
A plugin for automatically generating mazes and tower-style dungeons in Minecraft by reading structural data from JSON files.

Siege!
Medieval Weapons, adding variation and choice to combat in Minecraft!
NLYB: Looting and Exploration
Shrink and store entire dungeons, temples, and villager houses then loot them safely from your base. (Never Leave Your Base)
Hollowing Demise
Dead players become spirits with healing mechanics inspired by Hollow Knight.
Dungeon Loot Configurator
Adds datapack-driven loot-table integrations that allows loot -tables to add things into other loot-tables
Hollow Knight: Silkcraft
Welcome to Silkcraft, this mod aims to bring the kingdom of Pharloom from Silksong into minecraft!
ProgressionDungeonRW
Replayable dungeon runs with modular generation—built for RPG progression and reward loops.
Aqua Kingdoms
Build and become the strongest kingdoms from all fight expand and invade whatever you wanna do as king
Structure Overload
Transforms your Minecraft world into an endless sprawl of structures, spawning vanilla dungeons at every step without compromising game performance.
Fallen Kingdom Generator
Small datapack to easily generate ready-to-play fallen kingdoms to play with friends in LAN or on a public server
DungeonRefresher
Automatically regenerates loot in chests, barrels and vaults with custom cooldown and vanilla loot table support.
Conquest SMP's Crown
A legendary Minecraft crown that transforms its wearer into the true ruler of the kingdom. While wearing The Crown, you gain incredible defensive abilities and command an immortal army of loyal Royal Guards.
The Dungeon Experience
Adds content from Minecraft Dungeons in a pretty vanilla way.
Hollow Life
I mixed Hollow Knight and Grian's 3rd Life
Enhanced Spawners: Chambers of Control
Enhanced Spawners: Chambers of Control lets players upgrade and customize mob spawners using survival items, with full redstone control and spawn egg integration — all without commands or GUIs. Designed for clean, technical mob farms and dungeon systems.
BandanaKnight's Battle Flask's
A Mod Inspired By Terraria's Flask System!
MSRdungeons
MSRDungeons is a Paper/Purpur plugin for **resettable wave-based dungeons** with MythicMobs integration, team participation rules, rewards, cooldowns, and schematic restore.
Improved Structures & Dungeons
The combination of all minecraft Structure & Dungeons Data Pack
DungeonDodge EMI Integration
A mod that adds EMI integration for the DungeonDodge Server. Only for mining, and manually added, so it is not dynamic and may not be up to date.
Dungeon Loot Manager
GUI-based dungeon loot editor for Spigot / Paper / Purpur 1.21.10-1.21.11
Hallownest's Remains
This mod adds the remnents of the ancient civilizations of Hallownest and Pharloom from Team Cherry's Hollow Knight and Hollow Knight: SIlksong.
CasleRush
CastleRush, inspired by the German Youtubers "Rewinside" and "Ungespielt". A Paper Plugin that you can install to play an optimized version of the Format. Build your Castles with how many friends you want and race against them at the end.
DRdung
Plugin for custom dungeons with resources
MCDE Recipe Fix
Fixes MC Dungeons Enchanting's recipes, which do not work on some versions.