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libreg
by Sylv
libreg is a cursed and library Minecraft mod from Sylv with 1K downloads on the Orca catalog. It runs on Fabric, so it slots into a matching Minecraft profile without hand-patching anything. libreg is free to download and free to host on Orca: press Play and Orca launches Minecraft with libreg already installed, or host it on a free server to play with friends. There is no control panel and no config files to edit, and no command line to learn. Describe what you want in plain English and Orca installs libreg along with the loader and Minecraft version it needs, then you and your friends are playing in minutes.
A tiny Kotlin library for registering blocks, items, biomes, dimensions, etc.
How to install libreg
Two ways to add libreg to Minecraft. One takes a click.
- Click Play below. Orca installs libreg with Fabric and the right Minecraft version, then launches straight into the game.
That’s it. Nothing to download or configure.
- Download the latest libreg file from Modrinth for your Minecraft version.
- Install Fabric and launch Minecraft once so the loader profile is created.
- Drop the downloaded .jar into your mods folder (the mods folder inside .minecraft, or your server's mods folder).
- Add any libraries libreg depends on (the Modrinth page lists them) into the same folder, then start Minecraft on the Fabric profile.
libregversions & compatibility
libreg targets Fabric. Orca matches the right loader and Minecraft version for you when you host or play it, so you never have to line them up by hand. For the full list of supported Minecraft versions and required dependencies, check the Modrinth page.
Mods like libreg
More Minecraft mods in the same vein you can host or play with Orca in one click.




