Minecraft Java 1.21 Mods
Browse 861 free mods for Minecraft Java 1.21 — popular picks include ZombieApocalypseSSS, Classic Combined, Banner Slot.
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ZombieApocalypseSSS
ZombieApocalypseSSS is a comprehensive Minecraft plugin that transforms your server into a thrilling zombie survival apocalypse. Featuring advanced zombie AI, evolving variants, player infection mechanics, psychological horror elements, and dynamic events
Classic Combined
This mod creates a Classic Minecraft/Modern Minecraft hybrid experience. Recreates modern features in a Classic Minecraft/Alpha Minecraft style. Fully Survival compatible
Banner Slot
Allows player to wear banners in survival minecraft by putting it in their head slot.
Realistic Mechanics - Vanilla+ Physics
Add immersive survival realism! Heavy items sink, rain extinguishes fires, and leaves cushion falls. ⚓🌧️🍃
Cobblemon Raid Den Queue
Adds a command that makes so players can queue into a raid together without having to search for it in the survival world. /rqueue
ModernMITE
ModernMITE is a fork of MITE Equilibrium — a 1.21.1 port of the classic hardcore survival mod Minecraft Is Too Easy (MITE).
YVtils SMP
SMP - Survival Multi-Player - YVtils-SMP adds many new features to your Survival Server
Revival Totem
Adds a craftable totem of revival to revive your friends in hardcore mode when eaten
In The West
A Modpack inspired by the wild west, featuring revolvers, horses, beautiful landscapes and survival mechanics.
Backrooms: The Complex
A survival friendly, lore accurate backrooms mod with high quality visuals.
Mechanical Dragon Annihilator Type A
This is an add-on for Dragon Survival, the Mechanical Dragon: Annihilation Type-A, which adds an optional dragon type to Dragon Survival.
End Fire
Serverside mod that adds purple fire for end stone blocks! Using polymer + resourcepack
easier Villager
Improves villager trading by adding trade cycling, infinite trades, and easier interaction mechanics for a smoother survival experience.
LivesPlugin
LivesPlugin: Hardcore Minecraft plugin with limited lives, revives, and Life Stars. Made with ❤️ by Kai.
SkyButtons
Utility mod for Hypixel Skyblock focusing on low-latency warp requests with a fancy new optional menu.
Umbra Poor Ores
An Exnihilo / SkyOrchards inspired Skyblock mod based on low income.
Fast Nether Portals
This data pack makes it so that, when going through a nether portal in survival mode, you go through (almost) instantly, just like in creative mode.
Breaking One Block Breaks All The Blocks
If you break a block... it breaks every block in a 50 block radius.
Survival Reimagined (NeoForge)
A Minecraft Mod with the goal of making Minecraft harder with a more realistic approach at progression
Tweaker Stick (Debug Stick)
A working Debug Stick for Survival mode use. ✅ Java REALM Compatible
Survival Displays
Create display models directly in survival without mods and resource packs
Challenge Craft
⚔️ Play the challenges from your favorite YouTubers! ⚔️ 45 challenge modes, randomizers, and chaos mechanics combined with lifetime XP progression. Every world is a new challenge run.
Draventh Ores
⚒ Advanced Tier Ores & Equipment This mod expands Minecraft’s survival progression by introducing 15 new late-game materials, each with full armor and tool sets. The goal of this mod is simple: Extend progression beyond Diamond and Netherite with a struc
Skyblock Essentials
Basic mechanics needed to get a player going in a skyblock world
Smart Survival
Smart Survival is a Fabric mod for Minecraft 1.21.11 that adds campfire comfort, sleep quality effects and nutritional food buffs to enhance survival.
Survival Not Guaranteed
Dive into an expansive Minecraft modpack that blends challenging survival mechanics like temperature and thirst with extensive exploration of overhauled dungeons and new biomes, all while offering dynamic combat, magical mastery, and complex automation.

Randinium
Random item challenges usually have no progression. This mod changes that by introducing a custom resource, drop multiplication and endgame gear. (Intended for Skyblock)
Inventory-Sync
Inventory Sync - Inv Sync - Sync inventories, armor, and XP in real-time! The ultimate group item-sharing plugin for seamless cooperative survival. similar used in (GamerFleet) video.
1 HP
Start the true Hardcore experience with 1HP.
Runechant
This Data Pack is meant as a reimagining of Survival Minecraft adding in a multitude of features to enhance progression and existing content as well as create new content for a Survival Player to explore.
Hardcore Ender Dragon
Datapack that makes the Ender Dragon significantly harder with new attacks and behaviors.

Survival Light Block
Use Light Block in survival mode
Candid - A True Adventure
Welcome to Candid! This project adds structures, enchantments, and all things catering to a true adventure. It's built as a companion to True Survival Mode, but can be played independently.
Infinite Stronghold
Ever thought strongholds should be the only structure? With this datapack, they can be! This datapack makes the world out of exclusively strongholds, like skyblock, but with strongholds instead of an island.
Villager Pathfinding Fix
Villager Pathfinding Fix makes villagers smarter, polite, and survival-ready. No more getting stuck on doors, infinite shoving matches, or running in circles when attacked. They now yield to each other, open "glitched" doors, and actively seek Iron Golems
Antideath-Carpet-addition
Antideath-Carpet-addition is a Carpet Mod extension for Fabric Minecraft servers (versions 1.21.x - 26.2) designed to enhance and optimize the game experience. It adds a suite of new loggers for server monitoring and game rules for survival, optimizatio