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.

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 My Game Library.

    Origin digital store with My Game Library highlighted
  2. Right-click The Sims 4 and select Update game.

    The Sims 4 game with a menu that includes Update Game
  3. Launch the game and select the Options Menu icon in the top-right corner.

    The Sims 4 game with the Options Menu highlighted
  4. Select Game Options in the menu.

    The Sims 4 Options Menu with Game Options highlighted
  5. Select the Other tab on the left side of the Game Options window.

    The Game Options menu with Other selected
  6. Select the boxes beside Enable Custom Content and Mods and Script Mods Allowed.

    The Sims 4 game options with Enable Custom Content and Mods and Script Mods Allowed checked

    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 check mark to acknowledge the warning about using mods.

    Warning about The Sims 4 mods with check mark highlighted
  8. Select Apply Changes and close the game.

    The Sims 4 Game Options menu with Apply Changes highlighted

    Repeat steps 1 through 8 each time a new patch is released.

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

    Location of The Sims 4 Mods and Tray 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 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.

    The Sims 4 game with the Gallery icon highlighted
  2. Select My Library at the top.

    The Sims 4 with My Library highlighted
  3. Select Include Custom Content in the left pane.

    The Sims 4 game with 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 of The Sims 4:

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

    The Sims 4 game with the Build Mode icon highlighted
  2. Select the Objects by Function tab.

    The Sims 4 Build Mode with Objects by Function highlighted
  3. Select Filter Items.

    The Sims 4 Build Mode with Filter Items highlighted
  4. Select Content > Custom Content to see your custom objects listed.

    The Sims 4 Build Mode with Custom Content highlighted

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.

    The Sims 4 Game Options with View Custom Content highlighted
  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.

    The Sims 4 game showing the rename path for files
  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.

    The Sims 4 game showing path to delete the game cache

    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.

    Origin website showing the Sims 4 game with Repair highlighted
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