eden/docs/user/Mods.md

User Handbook - Installing Mods

General Notes

Note: When installing a mod, always read the mod's installation instructions.

This is especially important if a mod uses a framework such as ARCropolis, Skyline, or Atmosphere plugins. In those cases, follow the framework's instructions instead of using Eden's normal mod folder.

For example, Super Smash Bros. Ultimate uses such a framework. See the related section below for details.

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Installing Mods for Most Games

1. Right click a game in the game list.
2. Click "Open Mod Data Location".
3. Extract the mod into that folder.

Each mod should be placed inside its own subfolder.

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Enabling or Disabling Mods

1. Right click the game in the game list.
2. Click Configure Game.
3. In the Add-Ons tab, enable or disable mods, updates, and DLC by ticking or unticking their boxes.

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Important Note About SD Card Paths

Some mods are designed for real Nintendo Switch consoles and refer to the SD card root.

The emulated SD card is located at:

%AppData%\eden\sdmc

Example:

Switch instruction:  sd:/ultimate/mods
Eden equivalent:     sdmc/ultimate/mods

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Framework-Based Mods (Super Smash Bros. Ultimate)

Some games require external mod frameworks instead of the built-in mod loader.

The most common example is Super Smash Bros. Ultimate.

These mods are installed directly to the emulated SD card, not the normal Eden mod folder.

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Installing the ARCropolis Modding Framework

Note: Some mod packs bundle ARCropolis with their installer (for example, Smash Ult-S).

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1. Download ARCropolis

Download the latest release:

https://github.com/Raytwo/ARCropolis/releases/

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2. Install ARCropolis

Extract the atmosphere folder into:

%AppData%\eden\sdmc

This is the emulated SD card directory.

Verify installation by checking that the following file exists:

sdmc\atmosphere\contents\01006A800016E000\romfs\skyline\plugins\libarcropolis.nro

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3. Download Skyline

Download the latest Skyline release:

https://github.com/skyline-dev/skyline/releases

Skyline used to be bundled with ARCropolis but is now distributed separately to avoid compatibility issues caused by outdated bundled versions.

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4. Install Skyline

Extract the exefs folder into:

sdmc\atmosphere\contents\01006A800016E000

The exefs folder should be next to the romfs folder.

Verify installation by checking that the following file exists:

%AppData%\eden\sdmc\atmosphere\contents\01006A800016E000\exefs\subsdk9

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5. Launch the Game Once

Start the game and make sure you see the ARCropolis version text on the title screen.

This will also create the folders required for installing mods.

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6. Install Smash Ultimate Mods

Install mods inside:

sdmc\ultimate\mods

Each mod must be placed inside its own subfolder.

Example:

sdmc\ultimate\mods\ExampleMod

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Troubleshooting

ARCropolis text does not appear on startup

Check the following:

• libarcropolis.nro exists in:

sdmc\atmosphere\contents\01006A800016E000\romfs\skyline\plugins

• subsdk9 exists in:

sdmc\atmosphere\contents\01006A800016E000\exefs

• Files were extracted to:

%AppData%\eden\sdmc

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Mods are not loading

Make sure mods are installed inside:

sdmc\ultimate\mods

Each mod must have its own subfolder.

Correct example:

sdmc\ultimate\mods\ExampleMod

Incorrect example:

sdmc\ultimate\mods\ExampleMod\ExampleMod

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Installing mods in the wrong folder

ARCropolis mods do not go in Eden's normal mod folder.

Do not install Smash mods here:

user\load\01006A800016E000

That folder is only used for traditional RomFS mods, not ARCropolis.