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Minecraft Java 1.21 Mods

Browse 146 free mods for Minecraft Java 1.21 — popular picks include Space Junk, SpeicherSaver, Scarab2233s End Hut.

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Space Junk
1.21.8neoforge

Space Junk

My very first mod, testing out all the features of the tool MCreator.

59downloads
SpeicherSaver
1.21

SpeicherSaver

A high-performance Minecraft server plugin that automatically deletes unused world files to reclaim 80%+ disk space while safely protecting player bases and builds.

56downloads
Scarab2233s End Hut
1.21.8neoforge

Scarab2233s End Hut

This mod adds a little end hut that will give you gun powder for rockets and make the end not so plane without changing the game completely

56downloads
ObsidianPlanet
1.21.11

ObsidianPlanet

This Datapack converts the world to obsidian. Included are some helpful but minor custom crafting recipes.

44downloads
MagicFactory
1.21.4neoforge

MagicFactory

Mod adding a new liminal space

42downloads
Alienated
1.21.8neoforge

Alienated

Adds a whole new planet to explore!

42downloads
Duzy Space
1.21

Duzy Space

Space World Gen for Servers, Customizable

35downloads
MyCosmo
1.21.9

MyCosmo

A Paper-plugin that adds space exploration to Minecraft.

11downloads
Caves & Canyons Data Pack (1.21.11, 1.20.1) – Mine Deep Into Massive
1.21.11

Caves & Canyons Data Pack (1.21.11, 1.20.1) – Mine Deep Into Massive

Caves & Canyons Data Pack reworks world generation to give you cleaner landscapes and deeper underground areas. It shrinks those messy holes on the surface and turns regular ravines into giant rift valleys that reach deep into the earth. As you dig further down, the spaces open up into massive caverns perfect for long mining […]

Big Globe Mod (1.21.11, 1.20.1) – Makes The Game World Bigger to Explore
1.21.11fabric

Big Globe Mod (1.21.11, 1.20.1) – Makes The Game World Bigger to Explore

Big Globe Mod makes the game world bigger and more biome to explore. The Overworld becomes 2,048 blocks tall, and both the Nether and End dimensions are 1,024 blocks tall. This means taller mountains, deeper caves, and more space to discover. The mod adds over 100 new blocks that fit perfectly with the game's original […]

Stellaris Mod (1.21.5, 1.20.6) – A Thrilling Space Adventure
1.21.5fabric

Stellaris Mod (1.21.5, 1.20.6) – A Thrilling Space Adventure

Stellaris Mod introduces a space exploration to Minecraft, allowing players to go beyond Earth and explore planets, moons, and galaxies. With its detailed rocket crafting system, planetary exploration, advanced technology, and encounters with alien species. Features: Rocket Crafting and Launching: Build and customize your rocket with a component system, upgrading it as you progress. Planetary […]

Stargate Journey Mod (1.21.1, 1.20.1) – New Interplanetary Portals
1.21.1neoforge

Stargate Journey Mod (1.21.1, 1.20.1) – New Interplanetary Portals

Stargate Journey Mod introduces a variety of new structures, blocks, and most importantly, Stargates into Minecraft. Stargates are special portal-like devices that can let a player travel between dimensions. Unlike the vanilla portals, Stargates cannot be built by the player. One had to go in search of special temple-like structures that hold the secrets to […]

Gregicality Rocketry Mod (1.21.1, 1.20.1) – Reach For The Stars
1.21.1neoforge

Gregicality Rocketry Mod (1.21.1, 1.20.1) – Reach For The Stars

Gregicality Rocketry Mod is a comprehensive addon for GregTech: New Horizons that integrates advanced rocketry and space exploration mechanics. It introduces a suite of high-tech components and systems, allowing players to build and launch custom rockets, explore new celestial bodies, and harness extraterrestrial resources. Features: Design and construct customizable rockets with modular components.​ Explore new […]

Multiverse Mod (1.21.4, 1.20.1) – Portals and Infinite Dimensions
1.21.4neoforge

Multiverse Mod (1.21.4, 1.20.1) – Portals and Infinite Dimensions

In the vast realm of Minecraft, the quest for exploration and adventure knows no bounds. With the introduction of Multiverse Mod, infinite dimensions with infinite excitement have been added to the game. Features: Rifts Before we dive into the multiverse, we have to understand the concept of rifts. Rifts are small tears in space-time that […]

U
1.21.1neoforge

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.

60downloads
KingCraft [FORGE]
1.21.1neoforge

KingCraft [FORGE]

Travel to a different planet? Fight new bosses? Discover new game mechanics? Welcome here.

17kdownloads
Star Wars RPG - Star Wars & Stellaris
1.21.1neoforge

Star Wars RPG - Star Wars & Stellaris

Experience Star Wars in Minecraft with iconic characters, powerful bosses, legendary planets, unique structures, and an epic adventure across the galaxy.

6.7kdownloads
Cobblemon Spyland Edition Rocket
1.21.1fabric

Cobblemon Spyland Edition Rocket

A unique Cobblemon adventure with legendary structures, Radiant Cobblemon, raids, economy systems and the iconic Rocket Casino.

2.1kdownloads
AstroworldSMP Official Pack
1.21.1neoforge

AstroworldSMP Official Pack

The official modpack of Galaxystylix's AstroworldSMP modded server

1.6kdownloads
Better Elytra Boost
1.21.1neoforge

Better Elytra Boost

Adds a new item for Elytra boosting, serving as a replacement for rockets.

1.5kdownloads
Capital Industries Server
1.21.1neoforge

Capital Industries Server

A fast, multiplayer-focused Create mod-pack built for massive automation, optimized performance, nuclear power scaling, and expanded exploration across planets.

1.5kdownloads
Big Bang
1.21.1neoforge

Big Bang

Big Bang is a space exploration mod for Minecraft. Travel through space, discover new planets, and experience galactic-themed content inspired by classic space mods like Galacticraft.

1.4kdownloads
RECobblemon
1.21.1fabric

RECobblemon

Cobblemon modpack with the 1025 Pokémon ¤ pokemon raid ¤ ultra space ¤ Gacha machine ¤ Radiant Shiny

1.4kdownloads
Cobblemon Cafe [Serverpack]
1.21.1fabric

Cobblemon Cafe [Serverpack]

A cozy Cobblemon server where Pokémon adventures meet café charm and beautifully decorated spaces.

1.4kdownloads
simple personal pocket dimension
1.20.1forge

simple personal pocket dimension

Give every player a private, expandable pocket dimension — feed a Core block to grow your space, invite friends in, and kick unwanted visitors out.

1.2kdownloads
JustSpace
1.21.1neoforge

JustSpace

A mod that adds what it is called. Just space. A new space dimension with mysteries to reveal and lots of asteroids to mine.

1.1kdownloads
Steffen's MagiTech Mix
1.21.1neoforge

Steffen's MagiTech Mix

modpack with magic, tech, planets and portals.

872downloads
PokePlanet
1.21.1fabric

PokePlanet

Capture, Explore & battle players in a vast open world filled with cobblemon!

709downloads
Attack on Villagers
1.21.1forge

Attack on Villagers

This is the Modpack for The Rocket SMP join the discord for support and play.

705downloads
Voidscape - To space!
1.21.1neoforge

Voidscape - To space!

Explore the void between the planets.

571downloads
Project EGG: Echoes Of The Void
1.21.1neoforge

Project EGG: Echoes Of The Void

Dimensional Sci-fi horror and survival wrapped in a story-rich journey where your greatest ally might be compromised. Made by SpaceEgg on YouTube.

556downloads
Hyperspace Cobblemon
1.21.1fabric

Hyperspace Cobblemon

Hyperspace adds Cobblemon outbreak portals to a custom dimension with 1-6 star encounters

529downloads
Tacos World
1.21.1fabric

Tacos World

A vanilla mod pack with minor tech and space. just a series of ease of life mods such as rightclickharvest, JourneyMap, and so much more to explore!

525downloads
Backpacks & More Data Pack (26.2, 1.21.1) – Double Your Storage Space
1.21.1

Backpacks & More Data Pack (26.2, 1.21.1) – Double Your Storage Space

Backpacks & More Data Pack adds portable storage bags to help you carry more items during your travels. Each bag holds up to 27 item slots to double your storage space on long mining trips or exploration runs. The bags show up directly on your character model when you hold them in your hands. You […]

2032 World Height Mod (26.2, 1.20.1) – From Ground Level To Sky High
1.20.1

2032 World Height Mod (26.2, 1.20.1) – From Ground Level To Sky High

2032 World Height Mod increases your build limit to Y=2031 in all dimensions. Minecraft 1.21.9 Plugins, Features: Increases the build limit to Y=2031 in all dimensions Provides ample vertical space for building towering structures Unleash your creativity without constraints Screenshots: 2032 World Height Mod Download Links

Towers of the Wild Modded Mod (1.21.11, 1.20.1) – Multiple Dimensions & Planets
1.21.11

Towers of the Wild Modded Mod (1.21.11, 1.20.1) – Multiple Dimensions & Planets

Towers of the Wild Modded Mod adds a specific type of structure, tall towers inspired by Towers of the Wild. These towers have a waystone and a chest at the top. You will find a paraglider in the chest everytime, on top of other loot. The waystones are used as a beacon to transport between […]