CurseForge · Minecraft mod
Relictium
Relictium is a fork of Vintagium, which is a fork of Sodium ported to Forge for Minecraft 1.12.2. This is an optimization mod for Minecraft 1.12.2 that improves performance by rewriting the rendering engine.
Quick answer
Which Relictium release should I use?
Relictium 1.2.0 targets 1.12.2 with Forge. It must be installed on the client. Do not install it on the dedicated server. All 1 required mods have matching files.
Where it goes
Is Relictium required on the client, server, or both?
It must be installed on the client. Do not install it on the dedicated server.
This file is marked client-only.
What else does Relictium 1.2.0 need?
1.2.0. Change the file and its required mods may change too.
Install MixinBooter 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 Relictium without breaking your instance.
Built for Relictium 1.2.0. Pick another file and the loader, install side or required mods may change.
- 01
Stick to this file
Use 1.2.0. It targets 1.12.2 with Forge; another release may have different loader, side or dependency requirements.
- 02
Bring the mods it needs
Install MixinBooter first. We found matching files for this game-version and loader setup.
- 03
Put it on the correct side
It must be installed on the client. Do not install it on the dedicated server.
- 04
Pick the file you checked
Use the “Get this file” button beside 1.2.0. It opens that exact file at the source.
About this project
What does Relictium add?
Relictium

Relictium is an unofficial fork of Vintagium (by Asek3), itself an unofficial fork of CaffeineMC's “Sodium”, ported to Minecraft 1.12.2 and designed to work with Forge Mod Loader. This mod significantly improves the performance of Minecraft 1.12.2 by rewriting the game's rendering engine for smoother and faster gameplay. 🚀
📢 Disclaimer
Known incompatibilities:
- Optifine (Relictium is not and will never be compatible with Optifine)
- FarPlaneTwo
- LittleTiles
- Fluidlogged API (and other mods that use this API, such as Subaquatic)
- ArchitectureCraft
Due to limited time, feature requests are best made through pull requests. I’ll review them as soon as possible.
🌍 Community
Join our growing community of mod enthusiasts and contributors:
- Issues – Report bugs or request features.
- Pull Requests – Submit code improvements.
📜 License
Relictium is licensed under the LGPLv3 License. See the LICENSE file for more information.
Thank you for supporting Relictium! Your contributions and feedback are invaluable in making this mod even better! 💖
Project description from CurseForge.
Pick your setup
Relictium by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.12.2
1 loader buildCheck the dependencies, then try the file in a copied instance before changing a world you care about.
Recent files
Relictium versions and loaders
1.2.0
relictium-1.2.0.jar
19 Jan 2025
Relictium 1.2.0
relictium-1.2.0.jar
19 Jan 2025
Relictium 1.0.0
relictium-1.0.0.jar
18 Jan 2025
Looking for an older file? The official CurseForge project page is in Resources.