CurseForge · Minecraft mod
Astralium
Astralium is a late-game End progression mod that adds a rare cosmic ore, powerful upgradeable equipment, Momentum-based combat, multi-block excavation tools, and unique armour abilities such as double jumping and void walking.
Quick answer
Which Astralium release should I use?
Astralium 1.2.5 targets 1.20.1 with Forge. The project page does not say whether this file belongs on the client, dedicated server, or both. All 1 required mods have matching files.
Where it goes
Is Astralium required on the client, server, or both?
The project page does not say whether this file belongs on the client, dedicated server, or both.
The source does not explicitly classify this release as client-only or server-only.
What else does Astralium 1.2.5 need?
Astralium 1.2.5. Change the file and its required mods may change too.
Install Curios API first. We found matching files for this game-version and loader setup.
We only count dependency files that match this setup. A file for another loader does not fill the gap.
Before you install it
Add Astralium without breaking your instance.
Built for Astralium 1.2.5. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use Astralium 1.2.5. It targets 1.20.1 with Forge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install Curios API first. We found matching files for this game-version and loader setup.
- 03
Put it on the correct side
The project page does not say whether this file belongs on the client, dedicated server, or both.
- 04
Pick the file you checked
Use the “Get this file” button beside Astralium 1.2.5. It opens that exact file at the source.
About this project
What does Astralium add?
Astralium
Astralium is a late-game progression mod that expands Minecraft’s End with a rare cosmic material, powerful equipment, specialised mining abilities, and unique movement mechanics.
Venture beyond the central End island to discover Astralium Ore among the outer islands. Recover an Astralium Upgrade Template from an End Ship, gather the materials you need, and upgrade your Netherite equipment into a complete set of Astralium armour, weapons, and tools.
Astralium is designed to extend the vanilla endgame rather than replace it, giving you new goals to work towards after reaching the End while keeping progression tied closely to exploration and existing Minecraft systems.
Astral Momentum
Astralium weapons feature the Astral Momentum system, rewarding well-timed consecutive attacks.
Landing charged strikes builds Momentum, increasing your damage as you maintain the chain. Let the chain expire and your Momentum is lost, encouraging deliberate timing rather than constant clicking.
The Astralium Axe also gains improved attack speed as Momentum builds, making sustained combat increasingly powerful when used well.
Shifting Excavation
Astralium tools come with Shifting Excavation, a configurable multi-block mining system designed to make large projects faster without turning your tools into indiscriminate block breakers.
Switch between excavation modes to change the size, shape, and direction of the mining area.
The system respects tool suitability, block hardness, protected block entities, and normal server-side block-breaking rules.
Astralium Armour
Wearing a complete set of Astralium armour unlocks several powerful abilities designed around movement and exploration.
- Perform a double jump while airborne.
- Become immune to ordinary fall damage.
- Use a configurable virtual void floor near the bottom of supported dimensions.
- Walk, jump, and fight above the void as though solid ground were beneath you.
- Place blocks directly onto the virtual floor.
- Protect dropped Astralium equipment from falling beyond the floor.
The virtual void floor is especially useful in the End, allowing you to build and move through areas that would normally be extremely dangerous.
Astralet of Preservation
The Astralet of Preservation is a powerful cosmic charm that protects your belongings through death.
While equipped in its Curios slot, it preserves your inventory when you die, allowing you to keep your carried items, armour, and offhand equipment instead of dropping them.
The Astralet itself remains with you after death, making it a valuable late-game item for dangerous exploration, combat, and building around the void.
Experience is still lost normally.
Progression
Astralium builds on Minecraft’s existing late-game progression.
Begin by reaching the outer End islands and searching for Astralium Ore. To turn the material into equipment, you will also need to locate an Astralium Upgrade Template inside an End Ship.
From there, Astralium can be used to upgrade Netherite equipment and unlock the mod’s more advanced combat, mining, movement, and utility mechanics.
The goal is to make reaching the End feel like the beginning of another stage of progression rather than the end of one.
Configuration
Astralium includes a range of configurable options for both singleplayer worlds and multiplayer servers.
Server owners can customise features including:
- Momentum duration and maximum level
- Excavation dimensions and behaviour
- Virtual void floor dimensions and height
- Reconnect recovery distance
- Dropped-item floor protection
- Visual effects
- Sound effects
Relevant server settings are synchronised with connected players to keep behaviour consistent in multiplayer.
Requirements
- Minecraft: 1.20.1
- Java: 17
- Mod loaders: Forge and NeoForge
- Curios API: Required
- JEI: Optional, but recommended for viewing recipes
Astralium must be installed on both the client and server when playing multiplayer.
Project description from CurseForge.
Pick your setup
Astralium by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.20.1
2 loader buildsCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Astralium versions and loaders
Astralium 1.2.5
astralium-1.2.5.jar
9 Aug 2026
Astralium 1.2.5
astralium-1.2.5.jar
9 Aug 2026
Astralium 1.2.3
astralium-1.2.3.jar
7 Aug 2026
Looking for an older file? The official CurseForge project page is in Resources.