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Opti-Basic FabricMinecraft modpack for 1.21.11

A basic optimisation modpack for Fabric. [1.20.1-1.21.11]

newest supported 1.21.11OptimizationLightweightMultiplayer
Latest version
1.0.1
Minecraft
1.20.1 to 1.21.11
Java
Java 21+
Loader
Fabric
Licence
MIT
Downloads
1.1k
Updated
9 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Opti-Basic Fabric servers

One click and Opti-Basic Fabric 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

Screenshots

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

Minecraft versions

Every version Opti-Basic Fabric declares support for, newest first, with the Java runtime that version needs.

Other modpacks
MinecraftThroughJavaEvidenceReleased
1.21.11Fabric21+declared9 Dec 2025
1.21.10Fabric21+declared7 Oct 2025
1.21.9Fabric21+declared30 Sept 2025
1.21.8Fabric21+declared17 Jul 2025
1.21.7Fabric21+declared30 Jun 2025
1.21.6Fabric21+declared17 Jun 2025
1.21.5Fabric21+declared25 Mar 2025
1.21.4Fabric21+declared3 Dec 2024
1.21.3Fabric21+declared23 Oct 2024
1.21.2Fabric21+declared22 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
1.20.3Fabric17+declared4 Dec 2023
1.20.2Fabric17+declared20 Sept 2023
1.20.1Fabric17+declared12 Jun 2023

Download

From Opti-Basic Fabric’s own host. Nothing is re-hosted here.

1.0.1beta26 Dec 2025

Opti-Basic Fabric beta1.0.1 1.0.1.mrpack · 0.0 MB · for 1.21.11

Download latest
2bbc34ffc076…
Older versions16
  • 1.0.1626 Dec 20251.21.100.0 MB22 downloads8b5235e8e746…Get
  • 1.0.1526 Dec 20251.21.90.0 MB7 downloads626e78ea9d39…Get
  • 1.0.1426 Dec 20251.21.80.0 MB12 downloadsd0c40d3a468f…Get
  • 1.0.1326 Dec 20251.21.70.0 MB7 downloads2ab64fd6a6a4…Get
  • 1.0.1226 Dec 20251.21.60.0 MB11 downloads5ff8c0a9af38…Get
  • 1.0.1126 Dec 20251.21.50.0 MB12 downloadsd53c74cafa26…Get
  • 1.0.1026 Dec 20251.21.40.0 MB13 downloads9ee45746a715…Get
  • 1.0.926 Dec 20251.21.30.0 MB11 downloads03f151965236…Get
  • 1.0.826 Dec 20251.21.20.0 MB6 downloads7e0add68effe…Get
  • 1.0.72 Oct 20241.21.10.0 MB215 downloadscc2568f66cec…Get
  • 1.0.012 Aug 20241.21.10.0 MB138 downloadscd59ec8a503d…Get
  • 1.0.615 Jul 20241.210.0 MB116 downloadsf4dc0061fcbc…Get
  • 1.0.515 Jul 20241.20.60.0 MB57 downloads361196ad3b3a…Get
  • 1.0.415 Jul 20241.20.50.0 MB47 downloads84df522566b8…Get
  • 1.0.311 Jun 20241.20.40.0 MB90 downloads13d89c35b04b…Get
  • 1.0.211 Jun 20241.20.30.0 MB48 downloadsc395fbad6218…Get

Frequently asked

Does Opti-Basic Fabric work on Minecraft 1.21.11?

Yes. 1.21.11 is the newest Minecraft version Opti-Basic Fabric 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 Opti-Basic Fabric support?

Everything the author has declared, from 1.20.1 up to 1.21.11. The full list is in the table above, with the Java runtime each version needs next to it.

Which platform or loader does Opti-Basic Fabric 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 Opti-Basic Fabric?

On the newest Minecraft version it supports, Java 21 or newer. The requirement comes from the Minecraft version you run rather than from the modpack itself, so on an older supported Minecraft the answer is that version's Java, not this one.

What licence is Opti-Basic Fabric under?

MIT, 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 Opti-Basic Fabric?

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 Opti-Basic Fabric 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. The download link goes to the source recorded for that release; verify the publisher, filename and checksum before running it.

Works on the same versions

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

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Last checked 2 mo ago against Modrinth. We do not host files and we do not republish descriptions; every download link points at the author’s own release.

Not indexed yet. Score 54 against a threshold of 55. The page still exists and is still linked; it simply carries noindex until we hold more.

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