Relictium
by TheMade4
Relictium is a Forge optimization mod for Minecraft 1.12.2 that rewrites the game's rendering engine to raise frame rates.
What it does
Relictium is a fork of Vintagium, itself a port of CaffeineMC's Sodium to Forge for 1.12.2. Its main purpose is performance: the mod replaces parts of the rendering pipeline so that the game draws frames more quickly and with smoother output on the client. Relictium is built for 1.12.2 and written to work with the Forge Mod Loader only, and it requires MixinBooter to be installed alongside it.
The mod runs on the client alone, so players install it and servers do not need it. The author states that Relictium has never been compatible with Optifine, so the two should not be combined. A separate Fluidlogged API is provided for other mods, such as Subaquatic, that need fluid logging support, and the author accepts code contributions through pull requests. Feature requests are routed through pull requests because of limited development time.
Key features
Rewritten rendering engine
The rendering engine is rewritten to draw the world faster and more smoothly than the vanilla pipeline.
Fluidlogged API
An API lets other mods add fluid logging, and the author names Subaquatic as one mod that uses it.
Sodium lineage
The code descends from CaffeineMC's Sodium through Vintagium, adapted for Minecraft 1.12.2 on Forge.
Pull request workflow
Code improvements are submitted as pull requests, and feature requests are handled the same way.
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Requirements
Dependencies declared by the latest file for each loader.
Required 1
Use cases
Older survival worlds
Players running a 1.12.2 modpack who want better frame rates on the client can add the mod to their setup.
Modpacks with a Sodium-style renderer
Pack builders looking for a Forge option in the Sodium family can compare it with the other rendering mods listed for 1.12.2.
Who it’s for: Players on Minecraft 1.12.2 with Forge who want a client-side rendering optimization. Players who rely on Optifine should not use this mod, because the author reports it has never been compatible with Optifine.
How it compares
Nothirium is also a client-side Forge mod for 1.12.2, but it is under All rights reserved and is not open source. Dypsis is client-side only for 1.12.2 under the GNU Lesser General Public License v3.0 only, so its source is open. MicroOptimizations is client-side Forge for 1.8.9, licensed under the GNU Lesser General Public License v2.1 only. Relictium is client-side Forge for 1.12.2 and is open source under the GNU Lesser General Public License v3.0 only.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Relictium | Forge | 1.12.2 | Client-side only | 2025-01-19 |
| Nothirium | Forge | 1.12.2 | Client-side only | 2026-01-10 |
| Dypsis | Forge | 1.12.2 | Client-side only | 2025-07-29 |
| MicroOptimizations | Forge | 1.8.9 | Client-side only | 2024-08-08 |
Questions
Does Relictium need MixinBooter?
Does Relictium have to be installed on the server?
Can Relictium be used with Optifine?
In the catalog
Relictium is one of 3,545 Optimization mods on ModsFinder, and one of 1,441 Optimization mods for Forge. 2,920 mods support Minecraft 1.12.2.
Similar mods
What the author says
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…
Official listing
- Modrinth page
- modrinth.com/mod/relictium
- Owner
- TheMade4
- Published
- 2025-01-18
- Updated on Modrinth
- 2025-01-19
- Facts verified
- 2026-10-15