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modpack

CivOptimizedMinecraft modpack for 1.21.11

The essential modpack for CivMC. Optimal performance and utility.

client onlynewest supported 1.21.11OptimizationMultiplayer
Latest version
2.1.6
Minecraft
1.21.4 to 1.21.11
Java
Java 21+
Loader
Fabric
Licence
BSD-3-Clause
Downloads
1.3k
Updated
26 d ago
Available on
Modrinth
Space NodePartner

Host CivOptimized servers

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

  • 1.21.11
  • Fabric
  • One click modpack install
  • Dependencies handled
  • Tuned startup flags
  • NVMe SSD
Deploy a serverFrom €0.90 per GB

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.

All 45 releases
2.1.6release6 Jul 2026

CivOptimized 2.1.6.mrpack · 12.3 MB · for 1.21.11

Download latest
af398fd7cbf1…
Older versions24
  • 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 20261.21.80.0 MB50 downloadsf9a7dfc373fa…Get
  • 1.1.1522 Dec 20251.21.80.0 MB69 downloads89eda85f8f2c…Get
  • 1.1.1410 Dec 20251.21.80.0 MB47 downloads5dd13a4c9bc9…Get
  • 1.1.136 Dec 20251.21.80.0 MB19 downloadsa740b70755f1…Get
  • 1.1.1227 Nov 20251.21.80.0 MB34 downloadsd71c3e540315…Get
  • 1.1.1117 Nov 20251.21.813.6 MB39 downloads3edb23eb2124…Get
  • 1.1.1012 Nov 20251.21.80.0 MB25 downloadsfde57b7d39fb…Get
  • 1.1.931 Oct 20251.21.80.0 MB30 downloads26ece53e9a41…Get
  • 1.1.831 Oct 20251.21.80.0 MB28 downloads9f1bbf53a07c…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, so it works on any server you can already join.

Which loader does CivOptimized need?

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

Which Java version do I need for CivOptimized?

Java 21 or newer, because that is what the newest Minecraft release it supports requires. The requirement comes from the game rather than from the modpack itself.

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?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the modpack and Minecraft all have to be on the same version, which is the usual reason a mod does not appear in game.

Where do I download CivOptimized safely?

From the author's own page on Modrinth, which is where the data here is synced from. MCReference never mirrors, re-hosts or repackages a file: every download button points at the original source, so you get exactly what the author published.

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.Photon OptimizationMinecraft optimization framework prioritizing performance, simplicity, and compatibility. 1.7.10-26.1.2 across Fabric, Forge, NeoForge, and Quilt!ElixirA well-researched performance & optimization modpack to make the game run smoother! With shader & Fresh Animations support. 26.3 Snapshot 5 ✔fps+pvpFPS + PvP Boost is a lightweight Minecraft modpack designed to maximize performance and give players a competitive edge in PvP. With FPS-boosting optimizations and combat-focused tweaks, it delivers smoother gameplay, better responsiveness, and enhanced vi

Last checked 6 d ago against Modrinth. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

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