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Confluence: OtherworldMinecraft mod for 1.21.1

An expansion mod that combines Minecraft and Terraria

client and servernewest supported release 1.21.1AdventureMobsEquipmentFood
Latest version
1.2.11
Minecraft
1.20.1 to 1.21.1
Java
Java 21+
Loaders
Forge, NeoForge
Licence
LGPL-3.0-only
Downloads
447.5k
Updated
12 d ago
Available on
Modrinth
Space NodeOur hosting

Host Confluence: Otherworld servers

One click and Confluence: Otherworld 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 Confluence: Otherworld 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 Confluence: Otherworld’s own host. Nothing is re-hosted here.

Browse 28 indexed releases

For Minecraft 1.21.1

Choose the loader you use before downloading.

  • NeoForge

    1.2.4-260226 · 25 Feb 2026 · ConfluenceOtherworld-1.2.4-260226.jar

    Get NeoForge

Most recently published release

1.2.11release26 Oct 2026

ConfluenceOtherworld-forge-1.2.11+1.20.1-261025.jar · 52.3 MB · for 1.20.1 · Forge

Download this release
cfcb956e7bff…
Older versions24
  • 1.2.913 Oct 20261.20.150.4 MBf88bcbcf3a10…Get
  • 1.2.4-26022625 Feb 20261.21.133.9 MB66.7k downloadsddf98a71a894…Get
  • 1.2.3.3-26021515 Feb 20261.21.133.7 MB26.0k downloads16a4815150d4…Get
  • 1.2.2-2602087 Feb 20261.21.133.4 MB8.2k downloadsc4b72a966ff8…Get
  • 1.2.1-26012830 Jan 20261.21.133.0 MB70.9k downloads021b41db3b74…Get
  • 1.2.0-26012524 Jan 20261.21.133.0 MB7.8k downloadsd1be482eb43d…Get
  • 1.2.0-26011010 Jan 20261.21.133.0 MB4.5k downloadsc0bcd03f1baa…Get
  • 1.2.0-2601044 Jan 20261.21.132.5 MB8.2k downloads1f8440e9293c…Get
  • 1.2.0-beta9 Oct 20251.21.131.9 MB74.8k downloads10c282ab7a4d…Get
  • 1.1.5.12 Sept 20251.21.124.8 MB27.6k downloadsb14e30e7056f…Get
  • 1.1.416 Jul 20251.21.123.2 MB17.4k downloads2e4f5af26899…Get
  • 1.1.32 Jun 20251.21.119.1 MB13.1k downloads42671a309458…Get
  • 1.1.2-serverfix19 May 20251.21.119.0 MB20.2k downloads25788dae1196…Get
  • 1.1.218 May 20251.21.119.0 MB956 downloads2b1438ef745d…Get
  • 1.1.14 May 20251.21.117.0 MB7.7k downloads3c5ae256cbf8…Get
  • 1.1.0-hotfix2 May 20251.21.117.0 MB853 downloads5daceb4727bc…Get
  • 1.1.01 May 20251.21.117.0 MB586 downloads0c28d69b737a…Get
  • 1.0.5-hotfix5 Apr 20251.21.120.5 MB9.9k downloadsadc94c9327d6…Get
  • 1.0.54 Apr 20251.21.120.5 MB718 downloads9da9c7a739df…Get
  • 1.0.4-hotfix25 Mar 20251.21.120.2 MB3.9k downloads6d0cdd8d7f3b…Get
  • 1.0.424 Mar 20251.21.120.2 MB1.0k downloads9cb4c99a9d09…Get
  • 1.0.3-hotfix18 Mar 20251.21.119.8 MB7.7k downloads7a980970d221…Get
  • 1.0.318 Mar 20251.21.119.5 MB510 downloadsae6fc8dec5d9…Get
  • 1.0.2-hotfix13 Mar 20251.21.119.6 MB1.8k downloads4f935507958f…Get

Frequently asked

Does Confluence: Otherworld work on Minecraft 1.21.1?

Yes. 1.21.1 is the newest Minecraft version Confluence: Otherworld 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 Confluence: Otherworld 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 Confluence: Otherworld 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 Confluence: Otherworld 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 Confluence: Otherworld?

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 Confluence: Otherworld under?

LGPL-3.0-only, 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 Confluence: Otherworld?

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 Confluence: Otherworld 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.

GeckoLibA 3D animation library for entities, blocks, items, armor, and more!BookshelfAn open source library for other mods!Cloth Config API (Fabric/Forge/NeoForge)Config Screen API for MinecraftJourneyMapReal-time map used for mapping in-game or your browser as you explore.Architectury APIAn intermediary api aimed to ease developing multiplatform mods.Enchantment DescriptionsAdds in-game descriptions for enchantments to tooltips.

Details from Modrinth, where the author last updated it on 26 Oct 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? .