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modpack

CivOptimizedMinecraft modpack for 1.21.11

The essential modpack for CivMC. Better performance, graphics, and utilities.

client onlynewest supported release 1.21.11OptimizationMultiplayer
Latest version
2.1.9
Minecraft
1.21.4 to 1.21.11
Java
Java 21+
Loader
Fabric
Licence
BSD-3-Clause
Downloads
1.8k
Updated
2 mo ago
Available on
Modrinth

Minecraft versions

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

Other modpacks
MinecraftThroughJavaEvidenceReleased
1.21.11Fabric21+declared9 Dec 2025
1.21.8Fabric21+declared17 Jul 2025
1.21.4Fabric21+declared3 Dec 2024

Download

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

Browse 48 indexed releases

Most recently published release

2.1.9release18 Sept 2026

CivOptimized 2.1.9.mrpack · 12.2 MB · for 1.21.11 · Fabric

Download this release
13f5f8caa397…
Older versions24
  • 2.1.813 Aug 20261.21.1112.2 MBf9cc861cfe67…Get
  • 2.1.711 Aug 20261.21.1112.2 MBe941cd9bccc0…Get
  • 2.1.66 Jul 20261.21.1112.3 MB95 downloadsaf398fd7cbf1…Get
  • 2.1.528 Jun 20261.21.1112.3 MB33 downloads44f6bcd7552e…Get
  • 2.1.418 Jun 20261.21.1112.1 MB30 downloadsd8e4790f99c9…Get
  • 2.1.313 Jun 20261.21.1112.1 MB13 downloadsb8a146d81387…Get
  • 2.1.21 Jun 20261.21.1112.1 MB22 downloads544308b643c7…Get
  • 2.1.121 May 20261.21.1112.1 MB20 downloadsd52e65594793…Get
  • 2.1.014 May 20261.21.1112.1 MB11 downloadsbaf8577f725c…Get
  • 2.0.47 May 20261.21.1112.1 MB17 downloads5cad764f0161…Get
  • 2.0.325 Apr 20261.21.1112.1 MB19 downloads2d3175649e33…Get
  • 2.0.217 Apr 20261.21.1112.1 MB14 downloads8125ae0cfcdc…Get
  • 2.0.18 Apr 20261.21.1112.1 MB15 downloads58233853f3f4…Get
  • 2.023 Mar 20261.21.1112.1 MB27 downloads3514f35b00e0…Get
  • 2.0-beta422 Mar 20261.21.1112.1 MB19 downloadsd5a3d8c4ed76…Get
  • 2.0-beta36 Mar 20261.21.1112.8 MB39 downloads34db26a70b67…Get
  • 2.0-beta223 Feb 20261.21.1112.2 MB48 downloads99b6da4f0c66…Get
  • 2.0-beta120 Feb 20261.21.1112.8 MB23 downloads168b897bb47b…Get
  • 1.1.161 Feb 20261.21.815 KB50 downloadsf9a7dfc373fa…Get
  • 1.1.1522 Dec 20251.21.815 KB69 downloads89eda85f8f2c…Get
  • 1.1.1410 Dec 20251.21.815 KB47 downloads5dd13a4c9bc9…Get
  • 1.1.136 Dec 20251.21.815 KB19 downloadsa740b70755f1…Get
  • 1.1.1227 Nov 20251.21.815 KB34 downloadsd71c3e540315…Get
  • 1.1.1117 Nov 20251.21.813.6 MB39 downloads3edb23eb2124…Get

Frequently asked

Does CivOptimized work on Minecraft 1.21.11?

Yes. 1.21.11 is the newest Minecraft version CivOptimized 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 CivOptimized support?

Everything the author has declared, from 1.21.4 up to 1.21.11. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install CivOptimized 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 CivOptimized support?

Fabric. 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 CivOptimized?

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 CivOptimized under?

BSD-3-Clause, 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 CivOptimized?

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 CivOptimized 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)PacktrixPre-packed Official Modpack containing Patrix Resource Pack for easy install using Fabric/Quilt.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.香草精华 Vanilla EssenceFaithful to the origional. Better vanilla experience without any new blocks or mobsElixirA well-researched performance & optimization modpack to make the game run smoother! With shader & Fresh Animations support. 26.3 ✔

Details from Modrinth, where the author last updated it on 18 Sept 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? .