Aetherium

A Fabric mod inspired by the idea of Equivalent Exchange, built with its own progression, balance, and economy.

Overview

Aetherium is a Fabric alternative to ProjectE, designed for Minecraft 26.2 and future releases as development continues.

Rather than recreating ProjectE, Aetherium introduces its own interpretation of item transmutation. Every item has an Aetherium Value, allowing it to be converted into a universal resource and back again. Unlike ProjectE, Aetherium focuses on a steeper progression.

⚠️ Disclaimer

Aetherium is still in active development.

Not every vanilla item and block currently has an assigned Aetherium Value. More values will be added over time, with the eventual goal of supporting every vanilla item that seems to make sense.

❓ How It Works

Items can be converted into Aetherium, which can then be used to recreate other learned items.

Items → Aetherium

Aetherium → Items

Also the Max Stack size for Currency Crystals are 1000

A visible list of items are not provided

Maximum Capacity

Current Aetherium Cap (7 July 2026): 1 Decillion Aetherium

🤝 Modpack Support

Launch Minecraft once with Aetherium installed.
Close the game.
Navigate to config/Aetherium/
Open aetherium_values.json
Add or modify item values.

{
  "_comment": "item id : Aetherium value. Decimal values are supported.",
  "minecraft:diamond": 30,
  "modid:custom_item": 42.26
}

🤝 Mod Developer Support

Please vist the wiki at - https://mythic-studios.github.io/wiki/aetherium/#mod-support

💡 Inspiration

Aetherium draws inspiration from ProjectE (Equivalent Exchange 2) while taking the concept in a different direction.

It is not a direct copy, but its own system.

📝 Planned Features

Full vanilla item support
Expanded mechanics
More Items & Features to build apon
Adding a Wiki to say what to do

Aetherium [A Fabric Mod]