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Minecraft Java 1.21 Mods

Browse 27 free mods for Minecraft Java 1.21 — popular picks include Self-Sustainable, Elytra Vaults, XD's Library.

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Self-Sustainable
1.21.1fabric

Self-Sustainable

Real survival, scarcity, very rewarding. Are you ready?

109kdownloads
Elytra Vaults
1.21.5

Elytra Vaults

This Datapack/Plugin changes End City Ships to spawn with Vaults containing the Elytra so multiple people can get one!

46kdownloads
XD's Library
1.21

XD's Library

XDPXI's library for numerous tasks.

23kdownloads
PerformanceX
1.19fabric

PerformanceX

Struggling with LAG??? Look no further! PX is an All-in-one server performance suite - 50 modules including item/mob despawn timers, AI throttling, lag machine detection, auto backups, Discord webhooks, Geyser support, and more. 1.8.8-26.2.

14kdownloads
Endless City Primary
1.21

Endless City Primary

Turn your world into a vast & endless city, and try to survive this barren landscape.

13kdownloads
ReducedLoot
1.21neoforge

ReducedLoot

Reduced Loot cuts down the amount of items found in naturally generated loot chests across all structures – from vanilla dungeons to modded fortresses – bringing scarcity, balance, and challenge back to exploration-heavy modpacks.

5.0kdownloads
Endless City Legacy
1.21

Endless City Legacy

A more original version of our project Endless City. Travel an unending expansive city where your number one resource is very rare...

3.5kdownloads
Routes
1.21.1neoforge

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.

1.9kdownloads
Caseyy's Create Adventure
1.21.1neoforge

Caseyy's Create Adventure

A lightweight modpack blending Create’s mechanical magic with MineColonies’ charming town-building for a cozy, creative experience.

1.4kdownloads
Endless City LITE
1.21

Endless City LITE

Turn your world into a vast & endless city, and try to survive this barren landscape. A more performance friendly version.

1.1kdownloads
Elytra Trials
1.21.10

Elytra Trials

End city ships now have trial spawners and vaults.

723downloads
Crystal Town Mod
1.21.1neoforge

Crystal Town Mod

A mod that adds a slightly elaborate universe! A couple of dimensions, lots of interesting mobs, progression, magic wands and toxic weapons!

540downloads
Craft and Furious
1.21.1neoforge

Craft and Furious

This modpack is based on industry and mechanization. Build the industrial city of tomorrow!

509downloads
MHDF-Tools
1.17.1

MHDF-Tools

MHDF-Tools | Dream Tools | ✨ A lightweight portable high performance Bukkit base plugin ✨MHDF-Tools | 梦之工具 | ✨一款轻量化便携高性能的Bukkit基础插件✨

389downloads
"Townfall" - Dungeon in the sky
1.21.5fabric

"Townfall" - Dungeon in the sky

Data pack roguelike sky dungeon

361downloads
Elytra Vaults
1.21.3

Elytra Vaults

End Citys now have Vaults

202downloads
ElytraRemover
1.21.4

ElytraRemover

remove the elytra from the item frames in the endcity's boat

195downloads
Better Ancient City Loot
1.21.8

Better Ancient City Loot

rebalances ancient city loot tables

136downloads
Rotwire
1.21.1neoforge

Rotwire

A Zombie Survival take on Minecraft with infested cities. Establish a radio connection with the survivors to maintain your ammunition and resource supply. Migrate from town to town as their difficulty scales with your activity within each of them.

135downloads
Corex
1.21

Corex

Modern, Paper-exclusive compiled scripting engine

131downloads
The Echo Horror
1.21.8neoforge

The Echo Horror

A progressive psychological horror mod that introduces strange anomalies, distant watchers, unexplained encounters, and escalating disturbances as the days pass.

129downloads
Blitz Mod
1.21.1neoforge

Blitz Mod

Blitz is an alpha-stage industrial progression mod built around packet-sized electricity.

80downloads
SD5
1.21.6

SD5

SubData 5, the official Minecraft Datapack as seen on SubBurban 5.

64downloads
Ancient City Underground
1.21.11fabric

Ancient City Underground

Makes Ancient Cities generate densely underground in all Overworld biomes. Every chunk is covered by city structures with moderate overlap. Players spawn safely inside the city.

62downloads
Seasons&Scarcity:Core
1.21.11fabric

Seasons&Scarcity:Core

Seasons & Scarcity transforms your static Minecraft world into a living, breathing ecosystem with a dynamic, global four-season cycle.

33downloads
E
1.21.4neoforge

Electricity+Automation

This mod is about Electricity and Automation, it's mainly trying to make a fun long experience for the game!

77downloads
Create Sky Village Mod (1.21.1, 1.20.1) – Loot Mechanical Towns Floating Above
1.21.1

Create Sky Village Mod (1.21.1, 1.20.1) – Loot Mechanical Towns Floating Above

Create Sky Village Mod adds floating sky settlements packed with loot for Create. This mod spawns airborne villages high above the clouds, featuring buildings constructed from machinery and decorative materials. Players can travel up to settlements like Highwind Village to explore new structures and collect mechanical components. Features: Spawns floating island settlements high above the […]