
Modrinth · Minecraft modpack
Optimus
A performance modpack with Optifine parity and some visual increments. 26.2
Quick answer
Which Optimus release should I use?
Optimus 6.2620.4 is a complete pack release for 26.2 with Fabric 0.19.3. Install it as its own launcher instance. If the creator publishes a separate server file, make sure it names this exact pack release. 79 mods in this pack file.
Pack setup
How should I set up Optimus for players and a server?
Use Optimus 6.2620.4 as the pack version. Install the pack as its own launcher instance. The creator’s listing does not name a separate server file, so check the release notes before setting up a dedicated server. Do not upload the ordinary client folder blindly.
A pack is a matched client and server setup, not one mod with an install-side label. Keep its release, loader, manifest and overrides together.
These numbers come from the pack file you chose. “Not labelled” means we don’t know which side it belongs on—not that it is safe everywhere. The file count is not a RAM estimate.
What are the server requirements for Optimus?
Optimus 6.2620.4. Change the pack release and its contents or setup may change too.
The selected pack release is Optimus 6.2620.4. That file is for Minecraft 26.2 with Fabric 0.19.3. It contains 79 mod projects. The creator’s listing does not name a separate server file. Check their notes before using one, and do not upload an ordinary client folder or rebuild the pack mod by mod. A file count cannot tell us the right RAM, CPU or storage; size the server for the players and world you actually run.
About this project
What kind of pack is Optimus?

🛈 New version numbering system starting with 26.1
Starting with 26.1, our version numbering system will change: 
⁉️ Why Optimus?
🔥 Blazing fast performance
Optimus is based on Adrenaline, onme of the greatest performance packs available. It greatlty improves minecraft's performance by default, and Optimus goes further to add a few mods not bundled by default
📦 Everything you need is already prepackaged
Just install and go! Optimus provides a great lenght of QoL client-side tweaks, whilst keeping maximum performance.
🧡 Made with love.
Optimus is a passion project, born long before the first public release. I've been building performance modpacks for 7 years (due to tremendous need lol), and Optimus itself was born 3 years ago.
✒️ Good design.
Come on, don't you love the orange arrows?!
❔ Why not just use OptiFine?
OptiFine's methods are and have always been extremaly invasive. This leads to a lot of issues with other mods, and also slows down updates. Also, it doesn't offer the same boost in performance today as it did on older versions, when it was at it's peak.
Parity status for version 5.x:
Click to expand
| Feature | 1.21.5 |
|---|---|
| Shaders | ✅ |
| Dynamic Lights | ✅ |
| Zoom | ✅ |
| Better Grass | ✅ |
| Connected Textures | ✅ |
| Custom Item Textures | ⛔ |
| Custom Entity Models | ✅ |
| Capes | ✅ |
| Animated Textures | ⛔ |
| Particle Control | ✅ |
| Detail Control | ✅ |
| Animation Control | ✅ |
| Miscellaneous Toggles | ✅ |
| Custom Colors | ✅ |
| Custom GUI | ✅ |
| Custom Sky | ⛔ |
| Emissive Blocks | ✅ |
| Emissive Entities | ✅ |
| Random Entities | ✅ |
| Resource pack splash screen | ✅ |
➕ What are the QoL features added?
- Hunger-related improvements, allowing you to preview hunger and saturation from foods and actually seing your current saturation;
- Overall UI and UX improvements (animations, toggleable dark mode, numbered hotbar texture, etc)
- Better keybind management
- Larger screenshots by pressing F9
- Access worlds from .minecraft everywhere
- Keeping chats across worlds and servers
- Ability to revert controversial game changes
- The basics:
The list goes on; play to check everything out!
ℹ️ Still unsure?
Check the wiki (coming soon!)
👤 Credits
Resource Packs
Optimus Core features VanillaTweaks;
Mod credits are featured on each version's dependency list.
Project description from Modrinth.
Mods in Optimus 6.2620.4
Open any mod on Modpacks.ch to check its files and dependencies.
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Optimus by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
26.1.2
1 loader build1.21.11
1 loader build1.21.10
1 loader build1.21.9
1 loader build1.21.8
1 loader build1.21.7
1 loader build1.21.6
1 loader build1.21.5
1 loader build1.21.4
1 loader build1.21.3
1 loader build1.21.1
1 loader buildShowing the newest 12 of 14 game versions. Older files are in the list below.
Made local changes? Try them in a copied instance before touching a world you care about.
Recent files
Optimus versions and loaders
Looking for an older file? The official Modrinth project page is in Resources.