Minecraft Java 1.21 Mods
Browse 53 free mods for Minecraft Java 1.21 — popular picks include XMyIsland, CorruptionCraft, the pretor.
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XMyIsland
A comprehensive island management plugin that brings robust protection, intuitive GUI management, and economy integration to your Minecraft server.
CorruptionCraft
A plugin that challenges players. Random events can occur. (no Spoilers!)

the pretor
a mod that adds a new dimension called the pretor. and a lot more. created by:crunku/pjam64,zant and mcreator
Moldyfishy's Many Additions
The mod revolves around the Reimagined Dimension (Overworld but enhanced) and the Underworld (The Reimagined but darker and creepier)
Materia-Reborn
A progression-focused Minecraft transmutation mod inspired by ProjectE, featuring Essence, upgradeable tables, rituals, storage, and smelting systems.

Sweetymod
A sweet mod that adds a new candy-themed dimension, complete with new blocks, items, and a biome to explore.

The Pandoras Box
Pandoras Box adds a mysterious block that periodically generates random items from every installed mod. + New dimension
Glitch Mob
This adds a Glitch mob, Glitch tools, and Glitch ore!
twinkle popo mod
it adds twinkle popo realistic pikachu and realistic hellokity
AbsurdCraft: Laugh or Die(抽象纪元)
A comedy Minecraft mod that adds a screaming chicken sword, a self-harming bow, and a fart potion.
Ghost Garden
Ghost Garden is an atmospheric mod featuring loot-filled graveyards guarded by Skull Kin. Defeat the Royal Ghost to forge powerful phasing gear, stat-boosting crowns, and shield-shattering blades.
Unbound Adventures Into the Unknown
Unbound Adventures: Into the Unknown blends exploration, tech, magic, and space travel. Build with Create, cast spells with Ars Nouveau, and manage your loot with powerful storage mods.
GeyserCon
Modifies the Endercon datapack to stay within the Vanilla height limit.
Owl's Pocket Dimension
Enjoy a Pocket Dimension where you can build in peace! Survival and multiplayer friendly
Stream City
Unlock endless possibilities with FTB Suite, Applied Energistics 2, Ender IO, ComputerCraft , Mining Gadgets, Iron Furnaces, Jetpacks, Storage Drawers, Sophisticated Storage, and Mystical Agriculture. Elevate your Minecraft world today!
Kingdoms Reborn
200+ Mods + Resource Packs! Minecolonies, RPG Classes, L_Ender's Cataclysm, Bosses'Rise, Refined Storage, Ars Nouveau, and Create all in one!
GG Minecolonies with Tech
This modpack enhances the standard Minecolonies mod with Create, Refined Storage, Magic and other QoL mods.