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modpack

OptiCoolMinecraft modpack for 1.21.6

OptiCool is a modpack related to optimization/fix improvements and features from OptiFine!

client onlynewest supported release 1.21.6Optimization
Latest version
1.0C1pre1
Minecraft
b1.7.3 to 1.21.6
Java
Java 21+
Loaders
Fabric, Quilt, NeoForge
Licence
Apache-2.0
Downloads
6.9k
Updated
11 d ago
Available on
Modrinth
Space NodeOur hosting

Host OptiCool servers

One click and OptiCool is installed with the right loader, on hardware built for it.

  • 1.21.6
  • Fabric
  • Quilt
  • NeoForge
  • One click modpack install
  • Dependencies handled
  • Tuned startup flags
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

Screenshots

Click a screenshot to open it. Screenshots are served from the author’s own host and belong to them.

Minecraft versions

Every version OptiCool declares support for, newest first, with the Java runtime that version needs.

Other modpacks
MinecraftThroughJavaEvidenceReleased
1.21.6Fabric, Quilt, NeoForge21+declared17 Jun 2025
1.21.5Fabric, NeoForge, Quilt21+declared25 Mar 2025
1.21Fabric, NeoForge, Quilt21+declared13 Jun 2024
b1.7.3Fabric, Quilt, NeoForge8+declared7 Jul 2011

Download

From OptiCool’s own host. Nothing is re-hosted here.

Browse 27 indexed releases

Most recently published release

1.0C1pre1beta28 Oct 2026

OptiCool 1.0 C1-pre1.mrpack · 13.8 MB · for 1.21.6 · Fabric

Download this release
a699a7580666…
Older versions24
  • 1.0B123 Jun 20251.21.513.5 MB981 downloads617383fb3b69…Get
  • Quilt1.0B123 Jun 20251.21.513.5 MB35 downloads1f6fca123afe…Get
  • NF1.0B123 Jun 20251.21.576 KB78 downloads88e12aa3c4a0…Get
  • 1.0B1pre223 May 20251.21.513.4 MB133 downloadsb2f9efe544b0…Get
  • Quilt1.0B1pre223 May 20251.21.513.4 MB37 downloadsafec5c37dae1…Get
  • 1.0B1pre121 May 20251.21.50.1 MB31 downloads5305888bfca3…Get
  • Plus1.0A524 Jul 20241.210.9 MB796 downloads14824b99f2cd…Get
  • 1.0A524 Jul 20241.210.9 MB120 downloadsb6d26a6fa743…Get
  • QuiltPlus1.0A524 Jul 20241.210.9 MB56 downloads5800c56d264b…Get
  • Quilt1.0A524 Jul 20241.210.9 MB45 downloads0b20676721d0…Get
  • b1.7.3plus_a1_1.0.016 Jul 2024b1.7.332.7 MB2.2k downloads334c7e0251de…Get
  • b1.7.3a1_1.0.016 Jul 2024b1.7.332.7 MB542 downloadsec507922584f…Get
  • Plus1.0A415 Jul 20241.211.6 MB56 downloads9f6928930aba…Get
  • 1.0A415 Jul 20241.211.6 MB60 downloads016ee1f479dd…Get
  • QuiltPlus1.0A415 Jul 20241.211.6 MB42 downloadsc2441fd4d8a8…Get
  • Quilt1.0A415 Jul 20241.211.6 MB43 downloads043c4c924293…Get
  • Plus1.0A313 Jul 20241.211.6 MB54 downloadsad1d50636505…Get
  • 1.0A313 Jul 20241.211.6 MB51 downloads61e04d215ec3…Get
  • QuiltPlus1.0A313 Jul 20241.211.6 MB43 downloads837c60969d18…Get
  • Quilt1.0A313 Jul 20241.211.6 MB46 downloads95b0abbbbac5…Get
  • NFPlus1.0A113 Jul 20241.213.1 MB78 downloads9d2e9a280824…Get
  • NF1.0A113 Jul 20241.213.1 MB63 downloads724e49ca5151…Get
  • Plus1.0A213 Jul 20241.211.6 MB44 downloadsb7c8caf14c30…Get
  • 1.0A213 Jul 20241.211.6 MB43 downloads9778796b665a…Get

Frequently asked

Does OptiCool work on Minecraft 1.21.6?

Yes. 1.21.6 is the newest Minecraft version OptiCool declares support for, and the claim comes from the author's own release metadata rather than from a compatibility list somebody maintains by hand.

Which Minecraft versions does OptiCool support?

Everything the author has declared, from b1.7.3 up to 1.21.6. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install OptiCool on the client or the server?

The client only. There is nothing to install on the server side. That is the author's declared design, not a guarantee for every server: one running anti-cheat or missing a counterpart mod can still object.

Which platform or loader does OptiCool support?

Fabric, Quilt, NeoForge. A build for one platform or loader will not necessarily load on another, so this is the first thing to check before the Minecraft version.

Which Java version do I need for OptiCool?

Among the supported Minecraft releases above, the highest recorded requirement is Java 21 or newer. Use the requirement for the exact Minecraft version you run; previews and snapshots may differ.

What licence is OptiCool under?

Apache-2.0, as stated by the author on the platform we synced it from. Check the project's own page before redistributing or bundling it.

How do I install OptiCool?

Use a launcher that imports packs, such as Prism Launcher, the Modrinth App or the CurseForge app, and open the pack file with it. The launcher installs the right loader and mods for you; installing a pack's mods by hand is the error-prone way.

Where do I download OptiCool safely?

Start with the author's page on Modrinth, which is where the data here is synced from. MCReference does not host or repackage files. When available, recorded download links go to the source for that release; verify the publisher, filename and any available checksum before running it.

Works on the same versions

Ordered by how much of the recent Minecraft version coverage overlaps, not by popularity.

MAX FPS: Optimized🚀 MAX FPS WITHOUT UNNECESSARY MODS! Only 16 optimization mods - NOTHING EXTRA! ✅ ALL MAJOR VERSIONS ⚡ INSTALLS ON ANY LAUNCHER! (Guide below)Simply Optimized ReloadedAn unofficial port of Simply Optimized built to support every major mod loader and stay current with the newest versions of Minecraft.FPS+ PvP Boost | Ultimate FPS & Combat Client [ Every Version ]Ultra-lightweight FPS boost & PvP modpack for Fabric. Boost FPS on low-end PCs with Sodium optimizations, lower input lag, cleaner visuals, and combat HUD tweaks built for Hypixel Bedwars, Duels, PotPvP & CPVP. Maximize frames and dominate fights.ElixirA well-researched performance & optimization modpack to make the game run smoother! With shader & Fresh Animations support. 26.3 ✔Photon OptimizationMinecraft optimization framework prioritizing performance, simplicity, and compatibility. 1.7.10-26.1.2 across Fabric, Forge, NeoForge, and Quilt!Just Enough OptimizationJust Enough Optimization - Focused on low memory usage and higher avarege fps. Made for low-end pc so everyone can run Minecraft

Details from Modrinth, where the author last updated it on 28 Oct 2026. We do not host files or republish descriptions. Available download links point to the author’s own release.

Is this information wrong or missing something? .