Minecraft Java 1.21 Mods
Browse 860 free mods for Minecraft Java 1.21 — popular picks include Firework Variants, Aliens & UFOs, InfiniStorage.
Updated daily
Firework Variants
This resource pack gives firework rockets and firework stars different textures depending on the firework components.
Aliens & UFOs
A mod that adds Aliens, their spaceships and much more!
InfiniStorage
A simple mod that adds a Barrel with no space limitation
3D Rocket Jumper From TF2
The Rocket Jumper from TF2 but as a 3D model replacing Wind Charges! Also includes the Market Gardener from TF2 replacing the Mace (It's a 3D Shovel, It's badass trust me)
Space's Fast Paths
Sprint faster on established trails with a seamless movement speed boost exclusive to Path blocks.
Cobblemon Crossworlds
Catch Pokemon in Space! Modpack with Cobblemon, Infinite Dimensions, Stellaris, No Man's Craft, Bumblezone, The Aether, ProjectE, AE2, and Mekanism
oSzouakua's: Sleek Crosshair!
This pack makes your crosshair smaller, and sleeker! more screen space to enjoy the game :)
Time Vortex (TARDIS) - Neoforge
Embark on a journey through time and space with this survival-focused TARDIS mod. Designed for NeoForge 1.21.1, it offers a balanced and immersive approach to piloting your very own space-time machine.
Galaxy Sky
Galaxy Sky is a space-themed Skyblock modpack where the player starts on a small floating platform in the void with almost no resources.
Samll Totem Essential
Smaller totem. More screen space. Clean view, same lifesaving power.
Astrocraft - Custom Planets
A resource pack designed to add custom textures to the planets in Astrocraft
No Rocket Usage
Bans firework usage when using an elytra, because rocket flying is annoying! (and unfair, too.)
Loot Tickets
Convert loot chests into tickets to redeem later, saving on inventory space! Compatible with Lootr.
Pokemeteors
Spawn space-adjacent pokemeons inside actual falling meteors! Comaptibility with Cobblemon and OhMyMeteors
![Liminal Shader [LOST]](https://pub-2ae937f770284535a96c3330f91236aa.r2.dev/thumb/modrinth/389279.webp)
Liminal Shader [LOST]
Perfect for horror maps, liminal space builds, and atmospheric survival gameplay.
BetterPrisons
A client side mod for usage on CosmicPrisons intended to replace CosmicClient.
Space Race
Space Race is a Datapack that allows you to build your OWN rocket and explore the solar system!
Nox's Glinting Sun
A bright, star-shaped sun texture to shine over your mystical fantasy and surreal space age builds!
Mooniac
texture pack that turns regular moon into sleeping cosmic creature...
Galaxy Background
This pack adds a galaxy background :)
Firework Rocket Colors
An Optifine/CIT pack that adds variations to firework rockets, depending on their flight duration and whether they have explosions or not. Updated for compatibility with Minecraft 1.20.5 due to NBT changes.
AOneBlock
You start on a block in space. There is only one block. What do you do next?
Planet Helios
Modpack for Planet Helios Server. Optional for Playing Planet Helios Network's Celestia Game Mode!
Over Optimized
Over Optimized is Minecraft on rocket fuel—powered by nvidium and bleeding edge mods!
Advanced Rocketry 3
rockets, space station, warp travel
Rocket Utils
makes the use of rockets better
Aurora Astral
A cosmic-fantasy shader pack featuring animated astral rifts, a colossal planet, and an evolving galactic sky.
✨CosmicCosmetics | EULA Friendly | ✅1.20 - 1.21.x
An EULA friendly plugin that allows players to use cool cosmetics
Auto Rocket+
This project has been archived due to low downloads and no motivation to continue updating. Auto Rocket+ automatically equips fireworks while flying with an Elytra and restores your previous offhand item when you land. Toggle it anytime with R.
Space Alien.xo GUI
Colorful Spaced And Themed.
Rockets & Dragons
For our good friend BrianAllenMW who passed away in Aug 2025
The Ultimate Interplanetary Project
A different approach to the Interplanetary Project pack that combines tech, magic and exploration with space and astral bodies as destination options.
Shrieker Subspace Tripmine
replaces sculk shriekers sounds with the explosion of a subspace tripmine and also replaces sculk sensors sounds with the mine activating
Simplified Default Textures (Java)
This pack does the game more simple and gives you more FPS so you can use this for troll your friends because its so ugly Planet Minecraft: https://www.planetminecraft.com/texture-pack/simplyfied-minecraft/
Cobblemon Galaxy By Galaxy Dog
This is a cobblemon modpack with more integrations maked to have more fun and play with more features (cobblemon maps, pokemon menu, cobblemon addons)
Lumenshard+
Recommended Modpack for the successor to the legendary A'therys Ascended project; Lumenshard is an MMORPG-inspired Minecraft experience boasting MMO elements, beautiful play-spaces, impressive worldbuilding, and a deep lore.