How to install mods in The Sims 4

Installing mods in The Sims 4 is one of the best ways to expand the game, but many players run into issues because they miss small but important steps. Problems usually come from incorrect file placement, forgetting to enable settings, or using outdated mods.

This guide explains not only how to install mods, but also how to manage them properly and avoid common errors.

What counts as a "mod" in The Sims 4

Before installing anything, it helps to understand the types of files you are dealing with.

There are two main categories:

Custom Content (CC)
These are visual additions such as clothing, hairstyles, furniture, and objects. They do not change gameplay systems.

Script Mods
These modify gameplay behavior. Examples include new interactions, UI changes, and complex systems (like relationship overhauls or careers).

File types you will commonly see:

• .package → used for most content (CC + some mods)

• .ts4script → used for script-based mods

Script mods require extra attention because they can break after game updates.

Step 1: Download mods from reliable sources

Mods are not distributed through the official game client. You need to download them manually from trusted community sites.

Typical sources include:

• Creator Patreon pages

• Dedicated Sims mod sites

• Community forums

After downloading, the file will usually be compressed:

• .zip

• .rar

• .7z

You must extract these files before using them.

Step 2: Extract files correctly

This is one of the most common mistakes.

After downloading:

1. Right-click the file

2. Choose “Extract” or “Unzip”

3. Open the extracted folder

Inside, you should see actual mod files such as:

• .package

• .ts4script

If you still see a .zip file inside your Mods folder later, the mod will not work.

Step 3: Locate the Mods folder

All mods must go into the correct directory. This folder is created automatically when the game is installed.

Default path:

Windows and Mac:

Documents > Electronic Arts > The Sims 4 > Mods

Important notes:

• Do not place mods in the installation folder

• Only use the “Mods” folder inside Documents

• The game reads files from this location only

If the folder is missing, you can create it manually.

Step 4: Place files with correct structure

This is where many installations fail.

Basic rule:

• .package files can be placed in subfolders

• .ts4script files must be no more than one folder deep

Correct example:

Mods/   Clothing/      shirt.package   GameplayMods/      MyMod/         mod.package         mod.ts4script

Incorrect example:

Mods/Folder1/Folder2/Folder3/mod.ts4script  (too deep, will not load)

Additional tips:

• Keep each mod in its own folder

• Do not mix files from different mods

• Avoid renaming core mod files unless instructed

Step 5: Enable mods in game settings

Mods are disabled by default.

To enable them:

1. Launch the game

2. Go to Game Options

3. Select the Other tab

4. Enable:

• “Enable Custom Content and Mods”

• “Script Mods Allowed”

5. Apply changes

Then restart the game.

Without restarting, mods will not load.

Step 6: Confirm mods are installed

After restarting:

• A popup will appear listing installed mods

• Mods will appear in gameplay or build mode

If nothing appears:

• Files may be in the wrong folder

• Mods may still be compressed

• Settings may not be enabled

Organizing mods for long-term use

Once you install more than a few mods, organization becomes essential.

Recommended folder structure:

Mods/   CAS/   BuildBuy/   Gameplay/   UI/   Fixes/

Why this matters:

• Easier to find broken mods

• Faster troubleshooting

• Cleaner file management

You can also add version labels or creator names to folders.

Managing mods after game updates

Game updates frequently break mods, especially script mods.

After every update:

1. Disable mods temporarily

2. Launch the game once

3. Check for mod updates

4. Replace outdated files

Never assume old mods will continue working.

Common problems and how to fix them

Mods not showing up

• Check if mods are enabled in settings

• Make sure files are extracted

• Verify correct folder path

Script mods not working

• Check folder depth (only one level allowed)

• Ensure “Script Mods Allowed” is enabled

Game crashing or freezing

• Remove recently added mods

• Add mods back one by one to identify the issue

Mods disappeared after update

• Re-enable mods in settings

• Update or reinstall mods

Performance considerations

Installing too many mods can affect performance.

To avoid issues:

• Remove unused mods

• Avoid duplicate content

• Keep script mods minimal

• Regularly clean your Mods folder

Large amounts of CC (especially high-resolution textures) can slow down loading times.

Safety and best practices

Mods are community-created and not officially supported.

To stay safe:

• Download only from trusted creators

• Avoid sites asking for login credentials

• Back up your save files before installing mods

Mods can corrupt saves if incompatible or outdated.

Limitations

• Mods only work on PC and Mac

• Console versions (PlayStation, Xbox) do not support mods