Forge Mods for Minecraft Java
Browse 176 free Forge mods for Minecraft Java — popular picks include Compressed Factory, Space Dimensions, Genesis.
Step by step: How to install Minecraft Java mods & modpacks
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Compressed Factory
This is a space managing mod. By compressing space you can fit large rooms in a much smaller space.
Space Dimensions
A Mod That Adds Mars and the Moon (Beta)
Genesis
A space mod for Valkyrien Skies
VS Genesis
A space mod for Valkyrien Skies
HBM's NTM CE: Space
The only existing port of NTM: Space 1.7 fork onto 1.12.2 in a form of addon for NTM: Community Edition.

Astral Zinc
Adds zinc to some planets in Ad Astra.
Dragon Block Noea
Launch a space pod, touch down on an unfamiliar world and find your next challenge. Build a fighter with the new races, combine powers through fusion and take that training into tournaments and raid bosses.
Titled Starfish Galaxy Systems: Scline
The Scline System of the Tilted Starfish Galaxy has 7 Planets, each having at least one moon. The total of these together is 63 worlds!
Galacti Craft - Green Space
Adds UNIVERSE To The Game!!!!
The Pocketaverse - Pocket dimensions
This mod adds a way to create and go to pocket dimensions to provide more space ,add some extra exploration & imprisoning people :)
Dataplanets
Dataplanets provides infinite planets for VS: Genesis!
WarpDrive Celestials
Replaces flat WarpDrive Mod visuals with configurable 3D cube or sphere planets and more varied star colors.
Helldivers : Crafted Democracy
Spread Liberty to new worlds Helldiver! - Explore a host of worlds in need of liberation across the Galaxy! and crush the foes of freedom with the selection of weapons, armor and stratagems provided to you by S.E.A.F High Command! [ - This mod in Beta - ]

Ragex's Nuclear Tech
A sci-fi chemistry learning tool about space, science, immersion and of course Nuclear Tech.
The Moon - Explore with Olowar Space Industries
Explore vast surface are of the Moon and Make new Tools!!
NeroSpace
Mine alien ore, build machines to refine it, and craft tiered rockets to blast off to new planet-dimensions full of exotic ores. A space-exploration tech mod that turns survival into a journey from your first pickaxe to interstellar travel.
Galaxy Superheroes
This addon for palladium adds new Heroes! Like a Galactus!
Beyond The Stars
Beyond The Stars (BYTS) is an addon for Cosmic Horizons that reworks the solar system to give you 47 new planets to explore.
Pacific's Specifics
This is a addon to "Cosmic Horizons" that adds some crafting recipes for the steel, titanium, and nickel and makes it possible to play in survival!
The Expanse: A Space Journey
Space exploration in Minecraft.
Galaxy Under Chaos - A Star Wars Experience
"Galaxy Under Chaos" is a Minecraft Star Wars mod where players explore a galaxy in turmoil. Discover unique planets and powerful technology. Customize lightsabers, face new mobs, and navigate an ever-changing universe full of chaos and mystery.
The Dulling
A Cosmic Horror Story with Bosses, Dimensions, Magic, and more!
Digital Home: Private Dimension
A private space in a Pocket Dimension
Capybara's Liminal Spaces
Possibly your new favorite liminal space mod!
Planetmax's The Backrooms
The Backrooms in minecraft.
Celestial Exploration
Exploration of outer space.
Echoes Of Nowhere
A Pure Liminal Space mod That doesn't have that many blocks
spaced out!
There is no space in Minecraft right now, but this mod adds planets from our solar system and special planets to Minecraft!
Ad Astra: Ashes of Luyten
Adds new planets to the Ad Astra mod
Secret of Universe
Adds content from the "Ben 10" animated series. New dimensions, structures, items, and, of course, the cosmic watch!
SpacePortal
This mod is about getting to another dimenshions and getting infinity
Temporal Threads of Space (TTS)
This mod adds a new type of energy - temporal energy, with which you can control the space-time continuum
Eloncraft
A space mod that lets you live out your wildest dreams of becoming a hat merchant or sending cars to space.
Dimensional Sickness
These dimensions were not meant for you. A cosmic-horror mechanic that punishes players who linger too long in isolated spaces with a fatal sickness.
Liminal Space
This is a mod that adds liminal spaces to the game.
June's GeOverhaul
A complete re-imagining of Minecraft's underground, inspired by our own planet's 4.6 billion years of geologic evolution