Minecraft Java 1.21 Mods
Browse 1,677 free mods for Minecraft Java 1.21 — popular picks include Sulfur Caves Backport, No Tree Punching Remastered, Backrooms: The Complex.
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Sulfur Caves Backport
Backports the Sulfur Caves from the Chaos Cubed (26.2) game drop. Does NOT backport the Sulfur Cubes.
No Tree Punching Remastered
No Tree Punching Remade for 1.21.1, adding flint & copper tools along with rocks and new game mechanics to spice up your gameplay.
Backrooms: The Complex
A survival friendly, lore accurate backrooms mod with high quality visuals.
More Ancient Debris (3x)
Tweaks the world generation to get 3x more ancient debris spawn rates!
The Forgotten Man
A hand-built DELTARUNE Chapter 5 dimension you reach through a craftable door. The tree room, the man behind the tree, and a shader based portal you can see through.
Niobium
A mod that adds features that should be in Vanilla.
DimensionPause
A small utility plugin to disable entire dimensions across your server.
Jeck230NOTREALWORLD
AI-generated horror mod that adds the mysterious entity Jeck230, disturbing sounds, and a strange “not real world” atmosphere.
Jump Enchantment
New enchantment that, when applied to boots, increases your jump height!

More Ancient Debris!
Tweaks the world generation to generate around twice as much ancient debris as normal!
RuinedStructures999
Bring your world to life with RuinedStructures999 — a powerful plugin that spawns configurable, loot-filled ruined structures in your Minecraft world!
Minestuck Extras
Adds new blocks, weapons, foods, and armor sets to Minestuck.
MF24KU (decommissioned)
Development on this project has ended.◆An unofficial fork of "MirageFairy2024," a Minecraft mod for the MirageFairy project, created by Yoruno Kakera.
Nice End Mobs
Mob additions for the End Dimension to make it a more interesting place to explore.
FP's AntiFreecam
High-Performance Anti-Freecam/Anti-Xray for Spigot, Paper, Folia, and with Bedrock Support. Secure your world with ease againts freecammers.
Diary of an 8-Bit Warrior
Experience Aetheria like a Terrarian! Complete quests, kill bosses, and level up your skills! Maybe you'll even meet Runt and his friends…
Ravents
🗸 Ravents for custom mechanics. Design multi-wave raids with complex triggers, create unique mobs with modified stats, gear, and mounted towers. Spawn control: Replace vanilla mobs or add custom copies.
Everything is #dirt
'It's all dirt?' "Always was" Everything is tagged as dirt, glhf
Salinity
A New Cave Biome, a New Armor, a New Mob, and more.
All About Create - Automation & Mechanicals Tech
Master mechanical automation in Minecraft with the All About Create modpack, where you can build, automate, and innovate using the advanced capabilities of the Create mod.
linecraft
Experience Minecraft in a 3-block wide line!
Less Leaf Litter (LLL)
Reduces the amount of leaf litter that spawns in forests and dark forests, only making it appear under some trees instead of under all of them
Cool End
This mod adds new biomes, structures, mobs and resources to the End and Overworld, expanding exploration and improving gameplay and visuals.
Dimensions+
Enhance your adventure with new features, creatures, and challenges in this Minecraft mod.
Don't freeze
Added a game rule to disable the natural generation of ice
Vanilla Backrooms
Vanilla-Backrooms is a server-side only Backrooms mod based on Polymer
Quiet Pale Gardens
Only The Creaking will spawn in the Pale Garden in your world.
Corrupted Nether
Adds a Corrupted Forest biome to The Nether
Nostalgia Features: Alpha
Removes certain generation features not from Alpha.
Routes
Physical roads generated in world-gen that connect your world's structures - named routes, towns and areas, with waypoints and full Xaero map integration.
C.Weapons
Adds content to the game related to the creation of weapons and new ingots.
Nether Infection
The Nether can infect your world !
Stardom's Magic
A mod completely overhauling Minecraft's magic system!

Meloon's Realistic Thunder
This datapack upgrades weather in storms by bringing cozy delayed thunder to Minecraft
The Game Crasher
Instantly crash minecraft with 1 command on any PC! (Not a lag crash)
Biome Spreader
Adds recipes for potions that can spread biomes