The best performance modpack for minecraft
Performance
Mercurium has some of the best performance mods available. They were carefully selected and configured to provide maximum fps and make your gameplay as smooth as it can be.
Optifine parity
Mercurium gives you full optifine parity, so everything that works with optifine will probably work with mercurium too.
Only the needed
Mercurium has only the needed mods for maximum performance. You add all other mods you want, be it quality of life or gameplay-changing mods.
Open source
Mercurium is made with packwiz and is open source. You can contribute to the pack if you want.
FAQ
Q: I have a suggestion/question
A: Post it on our github
Q: What mods are included
A: See the relations tab on your version of the modpack
Q: Is the pack fully vanilla?
A: Yes, you don't need it on the server to be able to play, though it can improve server performance too.
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
- Downloads as Mercurium-1.0.0.mrpack
- Download size: 20 KB
- Download link checked 8 Sept 2026 — working
These come from our own check of the pack file, not from the source page.