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modpack

OptimusMinecraft modpack for 26.3

Improve your graphics and performance with this simple modpack. OptiFine functions. 26.3!

client onlynewest supported release 26.3TechnologyOptimizationLightweightMultiplayer
Latest version
5.5.5
Minecraft
1.20.4 to 26.3
Java
Java 25+
Loader
Fabric
Licence
GPL-2.0-or-later
Downloads
9.0k
Updated
6 d ago
Available on
Modrinth

Screenshots

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

Minecraft versions

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

Other modpacks
MinecraftThroughJavaEvidenceReleased
26.3Fabric25+declared15 Sept 2026
26.2Fabric25+declared16 Jun 2026
26.1.2Fabric25+declared9 Apr 2026
26.1.1Fabric25+declared1 Apr 2026
26.1Fabric25+declared24 Mar 2026
1.21.11Fabric21+declared9 Dec 2025
1.21.10Fabric21+declared7 Oct 2025
1.21.8Fabric21+declared17 Jul 2025
1.21.5Fabric21+declared25 Mar 2025
1.21.4Fabric21+declared3 Dec 2024
1.21.3Fabric21+declared23 Oct 2024
1.21.1Fabric21+declared8 Aug 2024
1.21Fabric21+declared13 Jun 2024
1.20.6Fabric21+declared29 Apr 2024
1.20.5Fabric21+declared23 Apr 2024
1.20.4Fabric17+declared7 Dec 2023

Download

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

Browse 57 indexed releases

Most recently published release

5.5.5release4 Oct 2026

Optimus-5.5.5.mrpack · 28 KB · for 26.3 · Fabric

Download this release
dc9e8886e389…
Older versions24
  • 5.5.417 Sept 202626.345 KBc621bb12c42d…Get
  • 5.5.325 Jul 202626.27.8 MB84 downloads5d1e4908277f…Get
  • 5.5.225 Jun 202626.27.8 MB340 downloadsc69985a84042…Get
  • 5.5.124 May 202626.1.225 KB225 downloadsa71be4752a66…Get
  • 5.5.02 May 202626.1.224 KB128 downloads30a5dac7a7e7…Get
  • 5.4.912 Apr 202626.1.223 KB131 downloads4b1206ec6c17…Get
  • 5.4.84 Apr 202626.1.124 KB144 downloadsb1b0de814ab0…Get
  • 5.4.730 Mar 202626.124 KB136 downloads3589555dc4dd…Get
  • 5.4.624 Mar 202626.122 KB225 downloads2ee103a37d07…Get
  • 5.4.58 Mar 20261.21.1125 KB127 downloadscecc2d2f9951…Get
  • 5.4.412 Feb 20261.21.1124 KB104 downloadsa7d396d1bbd3…Get
  • 5.4.320 Jan 20261.21.1124 KB77 downloadseaebb2e7506e…Get
  • 5.4.22 Jan 20261.21.1124 KB102 downloadsd34742fb2fe9…Get
  • 5.4.123 Dec 20251.21.1124 KB79 downloadsaa82c7e79cee…Get
  • 5.4.013 Dec 20251.21.1122 KB136 downloads358875c277e3…Get
  • 5.3.118 Dec 20251.21.1022 KB88 downloads500c540331ba…Get
  • 5.3.1027 Nov 20251.21.1022 KB69 downloads42a00b043304…Get
  • 5.3.91 Nov 20251.21.1022 KB127 downloadsfebb80bbbb96…Get
  • 5.3.818 Oct 20251.21.1022 KB106 downloads4901f9bf08e4…Get
  • 5.3.729 Sept 20251.21.822 KB104 downloadsb04e18d289a0…Get
  • 5.3.66 Sept 20251.21.822 KB116 downloads5a8dcea4a312…Get
  • 5.3.519 Aug 20251.21.822 KB84 downloads238da35a0b40…Get
  • 5.3.423 May 20251.21.522 KB299 downloads8eba1ea4ed59…Get
  • 5.3.36 May 20251.21.522 KB115 downloadsd2cf3d4d3199…Get

Frequently asked

Does Optimus work on Minecraft 26.3?

Yes. 26.3 is the newest Minecraft version Optimus 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 Optimus support?

Everything the author has declared, from 1.20.4 up to 26.3. The full list is in the table above, with the Java runtime each version needs next to it.

Do I need to install Optimus 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 Optimus 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 Optimus?

Among the supported Minecraft releases above, the highest recorded requirement is Java 25 or newer. Use the requirement for the exact Minecraft version you run; previews and snapshots may differ.

What licence is Optimus under?

GPL-2.0-or-later, 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 Optimus?

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 Optimus 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 ✔Uton OptimizatorEffective optimization for weak PCs and even for mobile devices.Fastly OptimisedA modpack to enhance the performance of Pojavlauncher, MojoLauncher, Amethyst Launcher, Pojav Zenith Horizon (Zalith Launcher), Zalith Launcher2, Hello Launcher, FoldCraft Launcher, SolCraft Launcher and Low-End-PCs.

Details from Modrinth, where the author last updated it on 1 Nov 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? .