

Introducion Icium!
Experience smooth gameplay without FPS drops, along with support for connected textures, shaders, and zoom. Turn your Minecraft experience into something fluid, stable, and most importantly, much more enjoyable with Icium!
Why Icium?
The goal of Icium is to maximize Minecraft's performance while keeping the vanilla game unchanged, focusing solely on enhancing optimization to the fullest.
High compatibility
Icium doesn't add any new content to Minecraft, pure optimization mods. Allowing to have full compatibility with any Fabric mod
Installation
On the discord you have a complete guide on how to install Icium
Bugs or issues?
If you encounter any bug or issue with Icium, join the discord to get support
Additional Notes
Feel free to use Icium as a base for your own modpacks. Here's a list with the full mod list
SpoilerBadOptimizations https://modrinth.com/mod/badoptimizations
Cloth Config Api https://modrinth.com/mod/cloth-config
Concentration https://modrinth.com/mod/concentration
Concurrent Chunk Management Engine (Fabric) https://modrinth.com/mod/c2me-fabric
Continuity https://modrinth.com/mod/continuity
Debugify https://modrinth.com/mod/debugify
Dynamic FPS https://modrinth.com/mod/dynamic-fps
Enhanced Block Entities https://modrinth.com/mod/ebe
Entity Culling https://modrinth.com/mod/entityculling
Fabric API https://modrinth.com/mod/fabric-api
Fabric Language Kotlin https://modrinth.com/mod/fabric-language-kotlin
FerriteCore https://modrinth.com/mod/ferrite-core
ImmediatelyFast https://modrinth.com/mod/immediatelyfast
kennytvs-epic-force-close-loading-screen-mod-for-fabric https://modrinth.com/mod/forcecloseworldloadingscreen
Krypton https://modrinth.com/mod/krypton
Lithium https://modrinth.com/mod/lithium
Memory Leak Fix https://modrinth.com/mod/memoryleakfix
Mod Menu https://modrinth.com/mod/modmenu
ModernFix https://modrinth.com/mod/modernfix
More Culling https://modrinth.com/mod/moreculling
Noisium https://modrinth.com/mod/noisium
Reese's Sodium Options https://modrinth.com/mod/reeses-sodium-options
Resourcify https://modrinth.com/mod/resourcify
Indium https://modrinth.com/mod/lithium
Sodium https://modrinth.com/mod/sodium
Sodium Extra https://modrinth.com/mod/sodium-extra
ThreadTweak https://modrinth.com/mod/threadtweak
YetAnotherConfigLib (YACL) https://modrinth.com/mod/yacl
Zoomify https://modrinth.com/mod/zoomify
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.4
- 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 (1.21.4) Icium 1.0 1.0.0.mrpack
- Download size: 5 KB
- Download link checked 10 Sept 2026 — working
These come from our own check of the pack file, not from the source page.