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Cosmos PortalsMinecraft mod for 1.21.1

Create Portals to anywhere, from anywhere!

client and servernewest supported 1.21.1TechnologyMagicTransportation
Latest version
8.13.0.0
Minecraft
1.20.1 to 1.21.1
Java
Java 21+
Loaders
Forge, NeoForge
Licence
LicenseRef-All-Rights-Reserved
Downloads
7.2k
Updated
13 mo ago
Available on
Modrinth
Space NodeOur hosting

Host Cosmos Portals servers

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

  • 1.21.1
  • Forge
  • NeoForge
  • One click mod install
  • Loader matched for you
  • Ryzen CPUs
  • 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 Cosmos Portals declares support for, newest first, with the Java runtime that version needs.

Other mods
MinecraftThroughJavaEvidenceReleased
1.21.1Forge, NeoForge21+declared8 Aug 2024
1.20.1Forge, NeoForge17+declared12 Jun 2023

Download

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

All 27 releases
8.13.0.0release29 Aug 2025

cosmosportals-neoforge-1.21.1-8.13.0.0.jar · 1.4 MB · for 1.21.1

Download latest
265987c1a0a5…
Older versions24
  • 8.12.0.015 Apr 20251.21.11.4 MB780 downloadsc3c8e8898b8e…Get
  • 8.11.10.011 Apr 20251.21.11.4 MB40 downloadse94d37780470…Get
  • 8.11.7.09 Apr 20251.21.11.4 MB36 downloads73160e9487ce…Get
  • 8.11.6.09 Apr 20251.21.11.4 MB37 downloads46afe5782ea4…Get
  • 8.11.4.02 Apr 20251.21.11.4 MB43 downloads26868fc7fd62…Get
  • 8.11.0.02 Apr 20251.21.11.4 MB48 downloadscae97d9605c2…Get
  • 8.10.21.01 Apr 20251.21.11.5 MB32 downloads992a6ccfd21a…Get
  • 8.10.14.01 Apr 20251.21.11.5 MB24 downloads918c8b3537e9…Get
  • 8.10.0.01 Apr 20251.21.11.5 MB28 downloads74853c0a0be7…Get
  • 8.9.20.031 Mar 20251.21.11.3 MB37 downloadsb4c939cdce74…Get
  • 8.9.0.030 Mar 20251.21.11.3 MB39 downloads9bb02bd501e2…Get
  • 8.8.15.028 Mar 20251.21.11.3 MB40 downloads4eebd666ba80…Get
  • 8.8.5.028 Mar 20251.21.11.3 MB28 downloadse7c78da676c3…Get
  • 8.8.0.020 Mar 20251.21.11.3 MB46 downloads9af7382764c2…Get
  • 8.7.0.020 Mar 20251.21.11.3 MB52 downloads529806eae71d…Get
  • 8.6.0.1015 Mar 20251.21.11.3 MB48 downloads7a161042d88a…Get
  • 8.6.0.015 Mar 20251.21.11.3 MB33 downloadsf3f1ec543bcf…Get
  • 7.5.0.01 Mar 20251.20.11.0 MB4.6k downloadse4a5f2315153…Get
  • 8.5.40.017 Feb 20251.21.11.2 MB86 downloads7aba458c4459…Get
  • 8.5.20.010 Jan 20251.21.11.2 MB67 downloads15a76efb7654…Get
  • 8.5.0.031 Dec 20241.21.11.2 MB43 downloadsb73ae7048fce…Get
  • 8.4.1.015 Dec 20241.21.11.2 MB33 downloadsc945361edda9…Get
  • 8.3.0.014 Dec 20241.21.11.2 MB28 downloadsfe17eea3cf00…Get
  • 8.2.0.013 Dec 20241.21.11.2 MB35 downloadsc9c887d747bb…Get

Frequently asked

Does Cosmos Portals work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Cosmos Portals 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 Cosmos Portals 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 Cosmos Portals 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 Cosmos Portals support?

Forge, NeoForge. 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 Cosmos Portals?

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

What licence is Cosmos Portals under?

LicenseRef-All-Rights-Reserved, 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 Cosmos Portals?

Install the matching loader first, then put the downloaded file in your mods folder and start the game. The loader, the mod 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 Cosmos Portals 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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Details from Modrinth, where the author last updated it on 29 Aug 2025. 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? .