Minecraft Java 1.21 Mods
Browse 2,272 free mods for Minecraft Java 1.21 — popular picks include Vertical Slab Placement, 67 Entity, Sharpness Particles Refurbished.
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Vertical Slab Placement
Allows all vanilla slabs to be placed vertically.
67 Entity
67 Entity is a horror mod for Minecraft that adds a mysterious creature inspired by the “67” meme. The entity will stalk the player, appear in unexpected places, and create a constant feeling of fear and tension throughout the world.
Sharpness Particles Refurbished
A sharpness particles & particle multiplier mod for Fabric. (Refurbished)

Holdable Frogs
Allows frogs to be handheld, after which the frog's tongue is usable to pull faraway entities closer, as well as to obtain froglights.
Minecraft, But a Random Effect Happens Every 30 Seconds (Chaos)
A datapack inspired by the popular GTA5 chaos mod, but then in Minecraft.
Instant TNT
Tired of waiting for the TNT to explode? Instant TNTs available now!
Lower My Paths and Slabs!
Lowers blocks on top of anything (such as slabs). Configurable and toggleable!
Stop Being An Idiot!
When one person dies, everyone dies
Cave World Remastered. (Froglight Edition)
Brings back the Old Cave World type but Better and More Improved.
Super Mod
Time only moves when you move (Superhot)
Update Depression
Update suppression helper mod
The Archivist
A fourth-wall-breaking psychological horror mod that uses your real-life PC info to scare you.
ExtraRecipes
Adds A Few Extra Crafting and Smelting Recipes "Vanilla"
NoCoordinates
Coordinates have been removed from the debugging menu, use the compass!
Ruined MCLive Early
A set of goofy and wild features based on fan comments to ruin Minecraft Live
DO NOT SAY THE NAME OF THIS BLOCK!
Removes ALL blocks in a chunk if you say its name!
EXTRACTROOMS
Backrooms-themed looter mod. Clip inside, loot randomly generated rooms, and find the exit before the timer runs out.
Floaty Purpur (Sable Addon)
Changes purpur to be floaty like endstone. (Sable Addon)
Aznos's TrollUtils
TrollUtils is a plugin that lets you mess with your friends or server members through a variety of options. From scrambling inventories to fake creeper hisses to imprisioning players, perfect for adding a bit of fun to your server
Waguri Totem (Fragant Flowers of Dignity)
Now you can use Waguri as your own totem

End Crystal Chain Reaction
A mod that makes End Crystals explode when affected by other explosions. Without this mod, they simply vanish.
Create: Enhanced Totem Productions
Renewable totems of undying, so you can cheat death with confidence!
Create: Unclamped
Removes the various clamps on speed!
Legacy Landscape
Legacy landscapes for your lugubrious level.
Gravity, Gourds, & You
An unconventional way to automate melons and pumpkins via dripstone.
Simple Meteorites
Fireballs will rain

Gravel to Flint
A mod that adds a lossy way of getting flint.
Screentext
Screentext is a Minecraft Mod for Fabric 1.20.1 - 1.21.11 and Forge 1.20.1 - 1.20.4 that let you display custom Text, Timers, Counters and Texture on the screen with fully customization!

Cursed Worlds
breaking world generation horrendously
Image Previewer
Preview images in chatbar easily, efficiently. (No resourcepack needed)
Global Emeralds
Unlocks Emerald Ore to spawn in all biomes.
Absurd Death Messages
A mod with features designed to achieve ridiculous death messages suggested by Knarfy's Audience
PsychoTerror
A psychological horror system that reacts to each player’s behavior, creating unique personal scares and world distortions.
Player Husk
Did I just see another of myself? Mimics of yourself that copies your exact movements with nothing to stop them.
Clown Raid
Adds circus parades! Made for Modfest: Carnival
Smooth Particles Reborn
Adds the functionality to spawn particles when you place a block (reborn)