Minecraft Java 1.21 Mods
Browse 69 free mods for Minecraft Java 1.21 — popular picks include SwapBallsReborn [Cobblemon], HSM - Mending fix & Skyblock drill fix, Mr_ChibisMMO.
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SwapBallsReborn [Cobblemon]
SwapBallsReborn let's you swap your Pokémon's catch ball in survival mode.
HSM - Mending fix & Skyblock drill fix
Fixes the vanilla mending bug that resets the block break progress while also providing the same fix for Hypixel Skyblock drills.
Mr_ChibisMMO
Survival based MMO for players to have fun in either (Singleplayer, Multiplayer, or Modded) skills such as, "Agility", "Attack", "Cooking", "Defense", "Excavation", "Fishing", "Hitpoints", "Hunter", "Magic", "Mining" & "Commands/Custom World Gen loot".
TNT Logic - Realistic Explosion Physics
Explosions now trigger realistic, block-by-block structural collapses. Watch entire buildings crumble - one block at a time.
RandomDirtDrops
RandomDirtDrops is a fun Minecraft data pack that makes breaking dirt blocks drop completely random items from the entire game — from diamonds to dragon eggs! Perfect for chaotic survival challenges and OP item speedruns.

AutoLandingWater
s long as the player has a water bucket in hand, falling from a height of three blocks or more will trigger an automatic water landing, ensuring the player's survival
Server Optimiser V2
Smart server optimization with optional TPS control. Reduce RAM usage 25%. Perfect for survival/skyblock servers. Entity optimization, chunk management, system monitoring.
ShieldStatus Mod
This mod adds a simple color indicator — green when your shield is active, red when it’s disabled or recharging. Perfect for PvP and survival players who want better combat awareness without clutter.
Milestone
A fresh take on Skyblock. Where almost every mechanic is expanded, every item is obtainable and every thing was made beautifully ♡
Health-Sync
Health-Sync -- Link hearts, hunger, and effects with your entire squad! Damage is shared instantly—if one takes damage, everyone feels it. The ultimate Health Share plugin for cooperative survival and hardcore challenges.
GlassSync
A mod for Hypixel Skyblock that fixes the clientside desync of glass pane block states on 1.21. This allows for easier aiming at glass panes for gemstone mining.
Aeternum Seasons
A dynamic and realistic station system for Minecraft Survival. Eng & Esp | Plug & Play

Project AZOTH Cobblemon Modpack
Project AZOTH is back and better than ever. Explore a fresh take on the Pokémon experience in Minecraft with seamless open-world mechanics, community-driven events, and an immersive survival adventure.
Better Left Click
Allows you to use left click bind like normal but not lose out on the competitive and survival advantage of using a keyboard key.
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.
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
Gamemode Shortener
A simple mod the that adds /gmc for /gamemode creative, /gms for /gamemode survival, /gmsp for /gamemode spectator, and /gma for /gamemode adventure
Item Compare
A comparison tool that lets you compare item stats and enchantments side-by-side with visual +/- indicators, including support for Hypixel Skyblock. Simply hover over items and press M to instantly see which gear upgrades are actually better.
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
kutils
A collection mod of client side qol features and tweaks from older pvp mods but for 1.21+, with unique skyblock and ui features.
Everything from Nothing
A 1.21.11 Expert Skyblock experience built entirely around vanilla mechanics, enhanced only with light QoL & performance mods.
hTreecapitator
Chop down trees by breaking one block! (Timber)
Graveling Zombies
Zombies now drop gravel when killed, letting you double dirt easily and speed up your Skyblock builds!
HotbarLoader
Save and load hotbars in Survival with customizable keybind combos (e.g. H + J to save, K + J to load). Missing items are simply skipped.
DINOsmp Mod - Industrial Evolution
A multiplayer-focused modpack emphasizing industrial automation, challenging survival mechanics, and optimized performance for long-term SMP play.
Scripted Essentials
A lightweight essentials plugin featuring immortality commands, warp commands, and reduced armor durability drain. Simple, optimized, and perfect for SMP and survival servers.
Sandy Husks
Husks now drop sand when killed, with chances increasing using Looting - perfect for Skyblock and fast sand farming!
SQBubliks: Restart
A reboot of vanilla survival, but with mods, travel, new structures, lots of mechanics, and magic!
True Nature
Realistic MC is a modpack that makes Minecraft feel real. With enhanced graphics, physics, and survival mechanics, it brings a grounded, immersive experience to your world.
UltraSpawners [LITE]
UltraSpawners is a lightweight spawner management plugin featuring basic stacking, simple trust permissions, and economy based mob unlocking, designed for survival and economy servers.
Sol's Hardcore
A typical minecraft hardcore with a few mods that help the player and add some new mechanics
QoL
(1.21.5+), Adds Quality of Life features that everyone needs in their Survival worlds/servers (will also include some of my other datapacks/mods in here)
Smp Launch Plugin
SMP Launch is a streamlined and lightweight Minecraft plugin designed to automate the chaotic start of a new Survival Multiplayer (SMP) season. With the simple command /smpstart
LogicGates
Forget about giant Redstone logic gates. All logic gates in one block!
Coarizwildtp
A simple wild teleportation (RTP) that may be integrated in survival servers. It aims to add a more customizable feature (such as world to teleport into) while creating a more optimized outcome.
Villager Breeding Tweaks
A plugin that decreases villager breeding cooldown and growing age, making villager breeding and growth faster for survival servers and SMPs.