How to Install Sims 4 Mods and Custom Content

Downloads and installations made easy

If you know how to install The Sims 4 mods, you can control all aspects of your sims' lives. Other types of Sims 4 custom content include player-created lots and scripts that add extra features like new traits, careers, and sim animations.

Instructions in this article apply to The Sims 4 for PC and Mac. Mods and custom content are not available for the console versions of The Sims 4.

How to Get Custom Content for Sims 4

You can download mods, scripts, and other custom content for The Sims 4 from various websites such as The Sims Catalog and Mod the Sims. Custom content usually comes in a compressed format such as ZIP or RAR files, which you must extract and move to specific folders in the Sims 4 game files. The mods themselves have different extensions including .package, .ts4script, .bpi, .blueprint, and .trayitem.

Whenever you click on an object in The Sims 4, you'll see the MC Command Center option listed.

Custom content can be accessed in various ways. For example, general modding tools like MC Command Center allow you to edit all game variables down to dictating the behavior of individual sims. Whenever you click an object, you'll see the MC Command Center option listed.

Use antivirus software to scan files you download from the web to avoid malware.

How to Add Mods to Sims 4

Before you install mods for The Sims 4, you should download the latest updates and patches:

  1. Launch the Origin digital store and select Game Library.

    Launch the Origin app and select Game Library.
  2. Right-click The Sims 4 and select Update game.

    Right-click The Sims 4 and select Update game.
  3. Launch the game and select the Options Menu icon in the top-right corner.

    Launch the game and select the Options Menu icon in the top-right corner.
  4. Select Game Options.

    Select Game Options in The Sims 4 Options menu.
  5. Select the Other tab on the left side of the Game Options window.

    Select the Other tab on the left side of the Game Options window.
  6. Select the boxes beside Enable Custom Content and Mods and Script Mods Allowed.

    Select the boxes beside Enable Custom Content and Mods and Script Mods Allowed.

    You can come back to this menu at any time and select View Custom Content to view the mods you have installed.

  7. Select the checkmark to acknowledge the warning about using mods.

    Select the check mark to acknowledge the warning about using mods.
  8. Select Apply Changes and close the game.

    Select Apply Changes and close The Sims 4.

    You will need to repeat steps 1-8 each time a new patch is released.

  9. Open the The Sims 4 game folder on you computer (it saves to Documents > Electronic Arts > The Sims 4 by default), then open the folder containing your custom content in a separate window. Drag-and-drop all .package or .ts4script files into the Mods folder, and move files ending in other extensions into the Tray folder.

    Drag and drop your Sims 4 mods in the appropriate folders.
  10. The custom content will be available the next time you start the game. To remove custom content, delete the files from the Mods and Tray folders.

Before deleting any files, make a backup copy of the Save folder within the Sims 4 folder first in case somethings goes wrong.

How to Use Custom Lots in Sims 4

Custom lots must be stored in the Tray folder within the The Sims 4 folder. To view your custom lots:

  1. Launch The Sims 4 and select the Gallery icon in the top-right corner.

    Launch The Sims 4 and select Gallery in the top-right corner.
  2. Select My Library at the top.

    Select My Library at the top.
  3. Select Include Custom Content in the left pane.

    Select Include Custom Content in the left pane.
  4. Select your custom lot to view its details.

    Select your custom lot to view its details.

How to Use Custom Objects

To use custom objects in Build Mode:

  1. Select Build Mode at the top of the screen, or press F2.

    Select Build Mode at the top of the screen, or press F2.
  2. Select the Objects by Function tab.

    Select the Objects by Function tab.
  3. Select Filter Items.

    Select Filter Items.
  4. Select Content > Custom Content to see your custom objects listed.

    Select Content > Custom Content to see your custom objects listed.

Troubleshooting Sims 4 Mods Installation Issue

If a mod isn't working, or if you experience problems after installing custom content, try the following:

  1. Check that custom content files are in the correct folders. Only files ending in .package or .ts4script go in the Mods folder. Store files ending in .bpi, .blueprint, or .trayitem in the Tray folder instead. Files ending in .zip or .rar will not work.

    The Mods folder within The Sims 4 game folder.
  2. Check that custom content is enabled in your game settings. Also, make sure you choose the option to display custom lots and objects.

    Check that custom content is enabled in your Sims 4 game settings.
  3. See if there are any new updates available for your mods. The Sims VIP website has a list of broken mods.

    The Sims VIP website has a list of broken mods for The Sims 4.
  4. Rename your mod files. Problems can occur when file names contain special characters such as @, $, or #. Rename files to remove these characters if necessary.

    Rename mod files to remove special characters.
  5. Delete the game cache. Open your The Sims 4 folder on your computer and delete the file named localthumbscache.package. You can also delete the contents of the cache and cachestr folders, but don't delete the actual folders themselves.

    Open your The Sims 4 folder on your computer and delete the file named localthumbscache.package.

    If you see a folder named onlinethumbnailcache, it's safe to delete the entire folder.

  6. Repair the game. Go to your Game Library in Origin and right-click the game, then select Repair to reinstall The Sims 4.

    Go to your Game Library in Origin and right-click the game, then select Repair to reinstall The Sims 4.