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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 release 1.21.1OptimizationMultiplayer
Latest version
6.1.3-enhanced
Minecraft
1.20.1 to 1.21.1
Java
Java 21+
Loader
Fabric
Licence
CC0-1.0
Downloads
11.7k
Updated
5 d 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.

Browse 33 indexed releases

Most recently published release

6.1.3-enhancedrelease24 Oct 2026

OCSMP 6.1.3-enhanced.mrpack · 2.5 MB · for 1.21.1 · Fabric

Download this release
da3ac0754c2b…
Older versions24
  • 6.1.3-base24 Oct 20261.21.12.7 MBb1d73a455c9b…Get
  • 6.1.2-enhanced18 Oct 20261.21.12.5 MB8be92016d48c…Get
  • 6.1.2-base18 Oct 20261.21.12.7 MBd60ed3cd611e…Get
  • 6.1.1-enhanced18 Oct 20261.21.12.5 MB401479605098…Get
  • 6.1.1-base18 Oct 20261.21.12.7 MB50887ab3633e…Get
  • 6.1.0-enhanced18 Oct 20261.21.12.5 MB253c9a93d47c…Get
  • 6.1.0-base18 Oct 20261.21.12.7 MB1db748d7b8fe…Get
  • 6.0.4-enhanced25 Jul 20261.21.131.1 MB182 downloads6ca19e1ee0ef…Get
  • 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 20261.21.146 KB475 downloads3360024d813d…Get
  • 5.2.121 Feb 20261.21.122 KB14 downloads0312e977b77b…Get
  • 6.0.0-a.214 Feb 20261.21.1255.4 MB22 downloadsc267da4a3a1b…Get
  • 6.0.0-a.113 Feb 20261.21.125 KB14 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 20251.21.127 KB49 downloadsf824f8703c38…Get
  • 4.3.121 Jul 20251.21.1206.2 MB71 downloads0a88c7ca4b3d…Get
  • 4.3.011 May 20251.21.1206.2 MB92 downloadsbeece43b9f19…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?

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 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. 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.

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)Simply Optimized ReloadedAn unofficial port of Simply Optimized built to support every major mod loader and stay current with the newest versions of Minecraft.PacktrixPre-packed Official Modpack containing Patrix Resource Pack for easy install using Fabric/Quilt.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 mobs

Details from Modrinth, where the author last updated it on 2 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? .