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Polymorphic Energistics Mod for Minecraft 1.20.1, 1.21.1

Polymorph support for Applied Energistics 2.

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8 downloads
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Updated
Updated 23.10.2026

About the Polymorphic Energistics mod

An add-on mod providing Polymorph support for the Crafting Terminal and Pattern Encoding Terminal from Applied Energistics 2, adding Polymorph's recipe selection button to these terminals in order to choose between conflicting crafting recipes instead of being forced to work with only one of these conflicting recipes within AE2.

How to install Polymorphic Energistics

With Millida Launcher

  1. Install Millida Launcher

    The launcher is free: download it at millida.net/launcher and sign in with any nickname.

  2. Click “Install” on this page

    The launcher opens and installs the mod for Minecraft 1.19.2–1.21.1 on Fabric, Forge or NeoForge automatically.

  3. Launch the game

    A profile with it appears in the launcher: click “Play”.

Manually

  1. Install Fabric, Forge or NeoForge

    The loader must match the game version of the mod file, for example Minecraft 1.21.1. After installing it, a separate profile appears in your launcher.

  2. Download the file for your version

    In the version list above, pick the file polyeng-0.4.1.jar (20 KB) for your game version and loader.

  3. Put it in the mods folder

    The folder is inside .minecraft (Windows: %appdata%\.minecraft\mods). If it does not exist, create it.

  4. Launch the loader profile

    Open “Mods” in the main menu: Polymorphic Energistics should be in the list.

Minecraft 1.21.1 runs on Java 21: with a different Java version the game may close right after launch.

Versions

With dependencies

MinecraftLoaderFileDateActions
1.21NeoForge0.4.1 (NeoForge 1.21)19.7 KB 5
1.20.1Forge0.1.1 (Forge 1.20.1)15.1 KB 3
1.19.2Fabric0.1.1 (Fabric 1.19.2)14.9 KB

FAQ

Which Minecraft versions does Polymorphic Energistics work on?

There are files for 1.21.1, 1.21, 1.20.1, 1.19.2. The newest is 1.21.1.

Is Polymorphic Energistics for Forge or Fabric?

There are files for Fabric: 1.19.2, for Forge: 1.20.1 and for NeoForge: 1.21–1.21.1.

Does Polymorphic Energistics need other mods?

The author lists no required dependencies: the Fabric, Forge or NeoForge loader is enough.

Which Java does Polymorphic Energistics need?

Minecraft 1.21.1 runs on Java 21. If the game closes right after launch, the usual cause is the wrong Java version in the profile settings.

Where can I download Polymorphic Energistics safely?

On this page: the file polyeng-0.4.1.jar (20 KB) is stored on Millida’s server, with no link shorteners. SHA-1 checksum: 4add4d9e854807ed2b10c0cabf972244f862b21f.

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