Minecraft Java 1.21 Mods
Browse 1,677 free mods for Minecraft Java 1.21 — popular picks include RTP random, Locator by Andrew, FloodWorld.
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RTP random
This is the most lightweight RTP plugin
Locator by Andrew
Adds a /locator command that trades emeralds to locate structures, biomes, or POIs with balanced costs.
FloodWorld
Replaces all air with water during chunk generation.
Trillion O Trees
An overworld mod adding many more tree types and forests... some added structures too
Configurable MC-237017 Fix
Fixes MC-237017 to allow for configurable lava-fill at the bottom of the world
Artilide
Artilide is a modpack that attempts to transform Minecraft's balancing and base mechanics to keep survival aspects for late game, along with overhauling exploration as a whole.
Altered (discontinued)
Once you enter you must see it through.
Overworld - End Sea [Create Aeronautics]
This project adds an Aeronautics End Sea to the Overworld

RestoreIt
Allows easy restoration of selected areas to previous states. Perfect for PvP servers, minigame servers, and build competitions where you need to quickly reset areas.
Biome Shift
Ever wanted to change the biome in spots of your world? Now you can with Biome Shift!
Stargate Reborn
All Stargate in Minecraft Vanilla ;)
World Customizer
This mod brings back a feature that was removed in the 1.13. The world customization Screen when creating a world
CC - CreateCobble
A Modpack for players looking for a Cobblemon modpack with a mechanical side.
Year of the Bomb
A mod where most of the vanilla items, blocks entities are long gone, and in their place, a giant, orange, dead post-nuclear wasteland awaits the player.
Prism's Light
Instantly brighten dark caves in Minecraft by pressing P for easier mining and exploration.
Potion Of Luck
Brew Luck & Bad Luck Potions (Vanilla+)
Aetheria: Age of Oblivion
This is a Dark Fantasy RPG-style compilation with an emphasis on complex combat, exploration of dangerous dungeons, and magic.
Beneath The Void
Adds a New Dimension Beneath The Void
Tons Of Dimensions
This mod adds dimensions from most blocks in minecraft.
Terrasect
Carve your world into regions and control terrain, climate, structures, mobs, and loot independently in each one.
Funglue's Metals and Minerals
A mod adding some metals, some non-metals & minerals. Focused (kinda) on metallurgy.
Dark Mode Datapack
Minecraft, but it's dark.
Facing Direction
This is a fabric mod that helps you visualize what direction you are going.
Buried.
Challenge your technical knowledge in a barren underground with limited resources
Arctics Undertale Souls
This mod was made from an idea I have had for a long time where you can be a human and or monster from Undertale. You can use Monster or Human magic to make your way through the world. You can either be enemys or friends its your choice.

Oaks Frontier
An entire overhaul on how you play minecraft
MineableTrials
Harvest trial spawners and vaults!
Randomized Armor Loot
Randomizes chest armor loot, while keeping it balanced by type and strength.
Megaroidandmegasitelocator
MegaLocator is a Fabric mod for Minecraft 1.21.1 that adds a special compass-style item capable of locating specific world structures. Instead of searching manually, players can use the MegaLocator to detect and track Megaroid and mega-site structures
Overworld 2 (old crystal sword)
Added new dimension and more!!!!
![Afterlife [Fog]](https://cdn.modrinth.com/data/AI0d6ACg/bd763990377a1b92c890f86bf439d81640041c74.webp)
Afterlife [Fog]
After death you are teleported to a foggish afterlife.
Advanced ore generation
This datapack changes ore generation to improve the progression in minecraft. Better ores now generate deeper than before and all ores have their specific biome where they generate more abundantly.
Pitagna mod
Add a touch of innovation to Minecraft with Pitagna Mod! This compact mod allows you to craft a practical backpack using the exclusive Pitagna ingot. Simplify your exploration and discover a new way to organize your adventures
Dimensions 1:1
Makes dimensions equal 1:1 to the overworld
OptiWorld
OptiWorld automatically cleans old dropped items and collects experience orbs every 60 minutes. Smart protection keeps player-placed items and nearby drops safe. Zero lag, works on any server.
Toggle dimensions
You can enable or disable the nether or the end