CurseForge · Minecraft modpack
Kool Optimized
It's Improves Performance And Visuals With Adding Essential QoL Features
Quick answer
Which Kool Optimized release should I use?
Kool Optimized 26.3-1.21.1 Replay Mod.zip is a complete pack release for 1.21.1 with NeoForge 21.1.232. Install it as its own launcher instance. If the creator publishes a separate server file, make sure it names this exact pack release. For this loader, use Java 21. 40 mods in this pack file.
Pack setup
How should I set up Kool Optimized for players and a server?
Use Kool Optimized 26.3-1.21.1 Replay Mod.zip 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 Kool Optimized?
Kool Optimized 26.3-1.21.1 Replay Mod.zip. Change the pack release and its contents or setup may change too.
The selected pack release is Kool Optimized 26.3-1.21.1 Replay Mod.zip. That file is for Minecraft 1.21.1 with NeoForge 21.1.232. This NeoForge setup needs Java 21. It contains 40 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 Kool Optimized?

✨ Features
- 🔎 Zoom
- 🎨 Shaders Support
- 🎮 Controller Support
- 🔥 Dynamic Light
- 🎥 Replay
- 🎤 Voice Chat
- 🏗️ Schematic
- 👜 Shulker Box Tooltip
- 🧩 Etc
🎯 Recommended For
- Vanilla players
- Creator
⚙️ Required System Memory
- Recommended 12 GB
- Minimum 6 GB
⚙️ Required Allocated Memory
- Recommend 4 GB
- Minimum 2 GB
📝 Notes
- Bug reports and suggestions are welcome
Project description from CurseForge.
Mods in Kool Optimized 26.3-1.21.1 Replay Mod.zip
Open any mod on Modpacks.ch to check its files and dependencies.
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Kool Optimized by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
Made local changes? Try them in a copied instance before touching a world you care about.
Recent files
Kool Optimized versions and loaders
Looking for an older file? The official CurseForge project page is in Resources.