(Credit to wsrv.nl for the images above.)
EssentiallyOptimal adds many mods I reccomend, like Sodium and Essential Mod. This mod is for people who are tired of vanilla or experience too much lag, and want something new and smooth, which this Modpack has!
Iris shaders ONLY. Do not update Iris or Sodium- doing so will cause the game to crash. If you insist on updating Iris or Sodium, please remove Immersive Portals.
Fabric ONLY- no NeoForge, Quilt, or straightup Forge.
EssentiallyOptimal is liscenced under the MIT Liscense, which can be reviewed here.
If you wish to support me, you do not have to donate, just Downloading will help.
- 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 — see the MC Java Mods guides for the full walkthrough.
- Downloads as Essentially-Optimal 1.2.0.mrpack
- Download size: 32 KB
- Download link checked 5 Sept 2026 — working
These come from our own check of the pack file, not from the source page.