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Duality project artwork

CurseForge · Minecraft mod

Duality

A high-quality RPG progression mod featuring rarity-based mobs, legendary relics, powerful artifacts, dynamic world events, and epic boss encounters.

Choose a version Pick your version below, then grab the matching file.

Quick answer

Which Duality release should I use?

Updated 7 days ago
Latest stable file duality-1.4.0.jar
Game version 1.20.1
Loader Forge

duality-1.4.0.jar targets 1.20.1 with Forge. The project page does not say whether this file belongs on the client, dedicated server, or both. All 3 required mods have matching files.

Where it goes

Is Duality required on the client, server, or both?

The project page does not say whether this file belongs on the client, dedicated server, or both.

Client Source doesn’t say
Dedicated server Source doesn’t say
Loader for this release Forge
Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume

The source does not explicitly classify this release as client-only or server-only.

Understand client and server requirements Read the Minecraft installation guide

What else does duality-1.4.0.jar need?

duality-1.4.0.jar. Change the file and its required mods may change too.

All 3 required mods have matching files

Install GeckoLib, Curios API, Patchouli first. We found matching files for this game-version and loader setup.

GeckoLib Needed by duality-1.4.0.jar
required
Matching file found Matched file: geckolib-forge-1.20.1-4.8.4.jar
Curios API Needed by duality-1.4.0.jar
required
Matching file found Matched file: curios-forge-5.14.1+1.20.1.jar
Patchouli Needed by duality-1.4.0.jar
required
Matching file found Matched file: Patchouli-1.20.1-85-FORGE.jar

We only count dependency files that match this setup. A file for another loader does not fill the gap.

Before you install it

Add Duality without breaking your instance.

Built for duality-1.4.0.jar. Pick another file and the loader, install side or required mods may change.

  1. 01

    Stick to this file

    Use duality-1.4.0.jar. It targets 1.20.1 with Forge; another release may have different loader, side or dependency requirements.

  2. 02

    Bring the mods it needs

    Install GeckoLib, Curios API, Patchouli first. We found matching files for this game-version and loader setup.

  3. 03

    Put it on the correct side

    The project page does not say whether this file belongs on the client, dedicated server, or both.

  4. 04

    Pick the file you checked

    Use the “Get this file” button beside duality-1.4.0.jar. It opens that exact file at the source.

About this project

What does Duality add?

Duality

Duality is a large-scale RPG progression mod for Minecraft 1.20.1, designed around the eternal conflict between Light and Darkness.

Fight increasingly dangerous enemies, discover powerful relics and artifacts, challenge unique bosses, and grow stronger through a deep progression system built specifically for long-term survival worlds.

Every journey is different, with dynamic mob rarity, world events, custom loot, legendary equipment, and meaningful character progression.

❤️ Feedback

If you discover any bugs, balance issues, or have ideas for new features, please let us know.

Every piece of feedback helps improve Duality and is greatly appreciated.

Thank you for supporting the project!

Project description from CurseForge.

Pick your setup

Duality by Minecraft version and loader

Choose the version and loader you play, then open the matching release.

1 available setups

Check the dependencies, then try the file in a copied instance before changing a world you care about.

Recent files

Duality versions and loaders

8 of 8 releases match

Looking for an older file? The official CurseForge project page is in Resources.

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