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Minecraft Java 1.21 Mods

Browse 32 free mods for Minecraft Java 1.21 — popular picks include Create Compressed, Aeronautics:Addition, The Expansion.

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Create Compressed
1.21.1neoforge

Create Compressed

Adds full blocks for raw materials. Have less micro-management & more storage space!

656kdownloads
Aeronautics:Addition
1.21.1neoforge

Aeronautics:Addition

This mod makes Create’s Mechanical Arm use world-space range and targeting logic in Sable dynamic structures, so its reach matches the actual physical workspace more closely.

57kdownloads
The Expansion
1.21.11

The Expansion

Explore Space In Minecraft! Now with Spacesuits!

47kdownloads
Create: Northstar-Aeronautics Compatibility
1.21.1neoforge

Create: Northstar-Aeronautics Compatibility

This mod adds a block named Dimensional Drive which, when attached on a physics object, has a GUI to select a destination planet form Create: Northstar. It teleports the physics contraption and the player on the selected planet. No crafting recipie yet.

42kdownloads
galactic create
1.21.1neoforge

galactic create

A massive Create addon introducing oxygen mechanics, custom planets, inter-dimensional spacecraft, alien mobs, and procedural space structures.

12kdownloads
GalaxyByne's Mailboxes
1.21.7

GalaxyByne's Mailboxes

A simple to use, multiplayer friendly mailbox datapack using addresses as recipients.

9.5kdownloads
Cobblemon No Man's Craft Compatibility Patch
1.21.1

Cobblemon No Man's Craft Compatibility Patch

Fixes Cobblemon not spawning and asphyxiating on alien planets

2.5kdownloads
Advanced Rocketry 3
1.21neoforge

Advanced Rocketry 3

rockets, space station, warp travel

1.8kdownloads
STAR WARS: Project The Force {SWPTF}
1.21.1fabric

STAR WARS: Project The Force {SWPTF}

A project that will completely immerse you in a Galaxy far, far away;)

984downloads
Fiber-Optic Cables
1.21.1neoforge

Fiber-Optic Cables

Adds a fiber optic cable, used to instantaneously transfer multiple redstone signals within a one block space.

924downloads
SpaceTNTTracker
1.21.11fabric

SpaceTNTTracker

A precise, client-side TNT timer and tracker for Fabric. Features a fully interactive HUD editor, lag-independent accuracy, and dynamic audio alerts. Perfect for Anarchy and Factions players.

889downloads
Interstellar: Galaxy
1.21.8neoforge

Interstellar: Galaxy

Travel throughout the galaxy

650downloads
Sky Crushes
1.21.1neoforge

Sky Crushes

SkyCrushes is a progression-based processing mod that adds mechanical Trituradores (Crushers) to process raw minerals, geodes, and space materials.

619downloads
AFK-Preventer
1.21fabric

AFK-Preventer

Prevents AFK kicks by randomly pressing movement keys (W/A/S/D/Space) every 20-40 seconds while you are in-game.

544downloads
Space Station Craft 14
1.21.8neoforge

Space Station Craft 14

This project aims to recreate the game Space Station 14 in Minecraft.

515downloads
Laicaps
1.21.1neoforge

Laicaps

[Alpha] A fantasy space exploration mod - for neoforge 1.21.1

477downloads
Stellar Depths
1.21.1neoforge

Stellar Depths

Drift through cosmic emptiness. A space exploration mod built around scale, silence, and the unknown.

461downloads
Planet Craft
1.21.1neoforge

Planet Craft

A mod to create a universe with Planets, Suns and Black Holes all customizable to your liking.

355downloads
Mob Rockets
1.21.11fabric

Mob Rockets

Send hostile Overworld mobs on an explosive one-way firework rocket ride! For hand-held, crossbow, and elytra use.

213downloads
Shadowed´s Infinite (Dark) Fireworks Rockets
1.21.1neoforge

Shadowed´s Infinite (Dark) Fireworks Rockets

Adds the Dark Firework Rocket, an infinite firework rocket upgradeable with netherite that allows you to change flight durations on the fly with Elytra!.

206downloads
error killer
1.21.4fabric

error killer

If you try to place a block but an obstacle is in the way (like levers) the mod instantly grabs a Water Bucket or Lava Bucket from your hotbar to clear the space and places your block

189downloads
Point Blank — Frontline Combat Launchers
1.20.1

Point Blank — Frontline Combat Launchers

Point Blank addon that adds bunch of different rocket launchers

186downloads
Smeshariki: Otherworld
1.21.8neoforge

Smeshariki: Otherworld

A mod featuring diverse space content in the spirit of Galacticraft.

170downloads
RocketRaid
1.21

RocketRaid

RocketRaid transforms Minecraft's crossbows into powerful RPG launchers.

164downloads
Delivery Rocket Mod
1.21.1fabric

Delivery Rocket Mod

This mod adds rockets, which deliver items!

118downloads
Create: Celestial Mechanics
1.21.1neoforge

Create: Celestial Mechanics

Launch yourself into space with the Create mod!

75downloads
MagicFactory
1.21.4neoforge

MagicFactory

Mod adding a new liminal space

61downloads
RPG PLUGIN
1.20

RPG PLUGIN

Create a highly detailed RPG-7 weapon mod. The weapon is based on a crossbow and fires explosive rockets instead of arrows. Rockets create a large explosion on impact, destroying nearby blocks

46downloads
CobbleAstra
1.21.1

CobbleAstra

Cobble Astra is a compatibility datapack for Cobblemon and Ad Astra, designed to make Pokémon adventures work naturally across the planets. It adds themed Pokémon spawns to Ad Astra planets and many other features.

28downloads
Petrol Parts Mod (1.21.1, 1.20.1) – New Create Mod Components
1.21.1neoforge

Petrol Parts Mod (1.21.1, 1.20.1) – New Create Mod Components

Petrol Parts Mod is an add-on for the Create mod, that introduces some new block mechanisms that can be used in combination with Create machinery. The newly added mechanisms include components like Coaxial Cogwheel, Differential, Double Cardan Shaft, Planetary Gearset, etc. Of these, the Hydraulic Transmission system allows you to easily transport items between different […]

I
1.21.4fabric

InventoryRightclickBackspace

Makes it so u can use backspace as right click in inventory for people that dont want to set up keyboard place and want to rebind their rightclick to backspace and still use is as right click in minecraft.

45downloads
Create Stellaris Mod (1.21.1) – Build Space Rockets with Mechanical Assembly
1.21.1

Create Stellaris Mod (1.21.1) – Build Space Rockets with Mechanical Assembly

Create Stellaris Mod extends Create with space-themed recipes and industrial automation lines. It connects kinetic engineering with space travel parts by letting you construct rocket components using mechanical contraptions. You can crush raw blocks, mix new metal alloys, and run sequenced assembly tracks to manufacture rocket parts. Features: Crush any type of ice block into […]