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Heavymatica

Install

Heavymatica runs on Fabric and on NeoForge for Minecraft 26.1.2, with the same features on both. It only needs to be installed on your own game: servers don’t need it, vanilla servers included.

  1. Install Fabric for Minecraft 26.1.2.
  2. Put Fabric API into your mods folder. Heavymatica needs it.
  3. Download the Fabric version of Heavymatica (heavymatica-fabric-…jar, or the version marked Fabric on Modrinth or CurseForge) and put it into the mods folder.
  4. Start the game.

Optional: install Mod Menu to open Heavymatica’s settings from the mods list.

Downloads are on the GitHub releases page.

Mods that work with it

Section titled “Mods that work with it”

None of these are needed. Heavymatica uses them when they are installed:

  • Iris shader packs: ghosts stay visible with a pack active.
  • Jade: shows the ghost block under your crosshair.
  • Mod Menu (Fabric): opens the settings from the mods list.

See Compatibility for details.

After installing

Section titled “After installing”

Join a world and press H to open the library. Signing in to Heavymatica Cloud is only needed for the cloud library; local schematics work without it. Then follow your first build.

Updating

Section titled “Updating”

Replace the old jar in mods with the new one. Your settings in config/heavymatica-client.toml and your placements stay. A settings file from one loader also works on the other.