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modpack

OCSMPMinecraft modpack for 1.21.1

Origins modpack containing a variety of content and performance mods, intended for use on the Origins Community SMP.

client and servernewest supported 1.21.1OptimizationMultiplayer
Latest version
6.0.4-enhanced
Minecraft
1.20.1 to 1.21.1
Java
Java 21+
Loader
Fabric
Licence
CC0-1.0
Downloads
7.6k
Updated
2 mo ago
Available on
Modrinth
Space NodeOur hosting

Host OCSMP servers

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

  • 1.21.1
  • 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 OCSMP declares support for, newest first, with the Java runtime that version needs.

Other modpacks
MinecraftThroughJavaEvidenceReleased
1.21.1Fabric21+declared8 Aug 2024
1.20.1Fabric17+declared12 Jun 2023

Download

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

6.0.4-enhancedrelease25 Jul 2026

OCSMP 6.0.4-enhanced.mrpack · 31.1 MB · for 1.21.1

Download latest
6ca19e1ee0ef…
Older versions24
  • 6.0.4-base25 Jul 20261.21.131.2 MB20 downloadsc6bc703fac6c…Get
  • 6.0.3-enhanced23 Jul 20261.21.131.1 MB109 downloadsab12c9fa0747…Get
  • 6.0.3-base23 Jul 20261.21.131.2 MB17 downloads92d5793957c3…Get
  • 6.0.2-enhanced23 Jul 20261.21.131.1 MB89 downloadsc6e694245405…Get
  • 6.0.2-base23 Jul 20261.21.131.1 MB21 downloads75349f4058a8…Get
  • 6.0.116 May 20261.21.133.5 MB2.2k downloads34e79186787f…Get
  • 6.0.015 May 20261.21.131.1 MB39 downloads2744dbba8ae5…Get
  • 5.2.223 Feb 20261.21.10.0 MB475 downloads3360024d813d…Get
  • 5.2.121 Feb 20261.21.10.0 MB14 downloads0312e977b77b…Get
  • 6.0.0-a.214 Feb 20261.21.1255.4 MB22 downloadsc267da4a3a1b…Get
  • 6.0.0-a.113 Feb 20261.21.10.0 MB14 downloadsf10b4834fdae…Get
  • 5.2.01 Jan 20261.21.10.6 MB25 downloadse2f0a059942b…Get
  • 5.1.027 Sept 20251.21.10.6 MB34 downloadse2ae9a6375ff…Get
  • 5.0.01 Aug 20251.21.10.0 MB49 downloadsf824f8703c38…Get
  • 4.3.121 Jul 20251.21.1206.2 MB71 downloads0a88c7ca4b3d…Get
  • 4.3.011 May 20251.21.1206.2 MB92 downloadsbeece43b9f19…Get
  • 4.2.029 Mar 20251.21.1195.4 MB74 downloadsac7fc3003b9c…Get
  • 4.1.13 Feb 20251.21.1180.2 MB41 downloads3c14b3f50601…Get
  • 4.1.020 Jan 20251.21.1138.8 MB35 downloadsbe7ea15e9fc5…Get
  • 4.0.212 Jan 20251.21.195.8 MB67 downloads51b738ba7a0b…Get
  • 4.0.126 Dec 20241.21.195.8 MB48 downloads7a74af250bda…Get
  • 4.0.06 Dec 20241.21.195.8 MB42 downloads216cce124895…Get
  • 3.1.028 Sept 20241.20.1139.9 MB172 downloadsb03ed3faea01…Get
  • 3.0.12 Sept 20241.20.1106.5 MB102 downloads3849f25ecd08…Get

Frequently asked

Does OCSMP work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version OCSMP 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 OCSMP support?

Everything the author has declared, from 1.20.1 up to 1.21.1. The full list is in the table above, with the Java runtime each version needs next to it.

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

Both. Every player needs it installed and so does the server, so anyone joining without it will be refused.

Which platform or loader does OCSMP 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 OCSMP?

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 OCSMP under?

CC0-1.0, 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 OCSMP?

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 OCSMP 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.

Re-ConsoleA continued Legacy Console Edition experience, expanded upon with modern Java Edition content and QoL! (An Official Legacy4J Project)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.ElixirA well-researched performance & optimization modpack to make the game run smoother! With shader & Fresh Animations support. 26.3 ✔OptimumFuse[1.21.5] [Fabric📜] An open-source modpack that improves the game's performance and visuals, inspired by OptiFine, while staying true to the vanilla Minecraft experience.

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.

Is this information wrong or missing something? .