Sims 3 – Creating a Mods Folder/Installing Mods Step by Step Guide

Sims 3 - Creating a Mods Folder/Installing Mods Step by Step Guide - Updated: Oct. 2020 - Free Cheats for Games

Sims 3 – Creating a Mods Folder/Installing Mods Step by Step Guide

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Creating a Mods Folder/Installing Mods Step by Step Guide

Updated: Oct. 2020

This is a step by step guide into creating a Mods Folder, for anyone who has never used mods before and doesn’t know where to start.

Quick Link Index
  – Having a hard time getting your mods to work? Click Here
  – Important Notes
  – Where Do the Mods and Custom Content Go?
  – Creating the Mods Folder
  – Extract the .package Files

 ~ Important Notes:

You don’t need WinRAR or 7-zip to actually download any game mods or custom content. Go to CC or mod site of choice and download the files to your computer from there.

Contact the specific site for help, if you’re having issues downloading any content from their site. We are not able to help with that.

Mac users can try  Keka. Windows has a zip program built into it that can be used to unzip any mod or CC files.

 ~ Where Do the Mods and Custom Content Go?

The mods folder has to go into your sims 3 folder in documents. Not the Games or Program Files (x86) folder.

User files should be located here: (by default)

C:UsersDocumentsElectronic ArtsThe Sims 3

Game install files should be located here: (by default)

Digital Download Version
C:Program Files (x86)Origin GamesThe Sims 3 (64-bit – Windows)
C:Program FilesOrigin GamesThe Sims 3 (32-bit – Windows)

The Original Disc Version – pre 2012 version
C:Program Files (x86)Electronic ArtsThe Sims 3 (64-bit – Windows)

** The newer disc versions may default install to Origin Games.

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 ~ Creating the Mods Folder:

Step 1:
Under the start up menu, Go under DocumentsElectronic ArtsThe Sims 3. Or simply type in “Electronic Arts” in the search bar. Look for it under Documents.

Example: C:UsersDocumentsElectronic ArtsThe Sims 3

Step 2:
When you open the folder, create a new folder and name it “Mods.” 
— To create a folder, right-click in the folder and select New > Folder and give it a name.

Step 3:
Under that folder, create another new folder, and name it “Packages.” This is where you download your .package files.

Step 4:
You will need to download the Resource cfg file. Right click Save As, into the Mods folder.

Extract the newly installed file, to activate it. You will need to move the newly extracted cfg file, out of the Resource folder, to the Mods one. If you get an error, remove the old resource file, then change the folder to another name. Copy the cfg file, and paste it onto the Mods folder. Remove renamed folder (formally Resource) from that same Mods folder.

Alternative download link:

—> See the attached zip file at the bottom of this post.

Unzip it by double-clicking the file. Right-click and select open on the folder it creates. Right-click on the Resourse.cfg file and select Copy then Paste it into the Mods folder.

— C:UsersDocumentsElectronic ArtsThe Sims 3Mods

Installing Mods:
On the website, you are downloading the mods from, (Nraas,, right click the rar or zip files and select “Save Target As…” Save the files to your desktop or backup media of choice. Like a USB key or external hard drive.

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Windows Users:
Windows has a zip program built into it that can be used to unzip any mod or CC files. However if you prefer, you can install 7-Zip or Winrar (Thank you, Hosfac. Totally pulled a Homer Simpson!) I personally use WinRar.

WARNING! WinRar is a nag program that will pester you into updating for a fee. Good news is that you can simply ignore it.

Windows 7 users has a free unzipper for extracting files. (Thank you, Seabody)

Mac Users: You will need to install Keka for extracting files. (Thank you, NonaMena)

Right click on the zip/rar file, and select “Extract…” This will create a folder. Inside that folder is a Package file, which is the game mod or custom content you downloaded. Again, if you have downloaded CC this way, as appose to a .Sims3Pack file, this method is no different.

I hope my step by step guide, has helped you. If you’re planning on deciding which mods are best for you, be sure to do your homework, before you know what you’re getting into.

A great mod creator, always updates within each EA patch, will answer any questions if anything goes wrong, and be able to tell which mods are conflicting. Also, downloading a module without the base mod, will cause your game to crash at the loading screen. (Example: Downloading a vet career at MTS without Twallan’s career mod!)

Parents, Guardians and Older Siblings: While mods can help improve your Sims 3 game and performance, some mods will add mature content, breaking the game’s T for Teen Rating! That being said, you should do more intensive research, on what package files will be installed into your modified Sims 3 game, if you share your game and PC with your young children, and/or siblings.

This is a family friendly website, so no such mods will ever be discussed here. If you ever happen to run in a website, be sure you delete the browser history, just to be on the safe side.  :)

That being said, have a happy Simming!

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 ~ Having a hard time getting your mods to work? Try this:

1. Go to DocumentsElectronic ArtsThe Sims 3. Create a folder called Mods. In this folder, create 2 more folders, one called Packages and the other called Overrides.

– Custom content packages go into the Packages subfolder.

– Mods go into the Overrides subfolder.

2. Download the file located here unzip it so you should have a file called resource.cfg, and put this file in the Mods folder.

3. After you’ve installed any custom content or mods, such as default replacements, or game mods, you need to delete the 5 cache files in DocumentsElectronic ArtsThe Sims 3:

  – CasPartCache.package – CAS parts that appear in Create-A-Sim
  – compositorCache.package – New objects that would appear in Buy/Build mode
  – scriptCache.package – Mods or Hacks
  – simCompositorCache.package – New Sims, default skins
  – socialCache.package – Simport-related and other social data, if you use the wall to integrate with your MyPage on site

These files are safe to delete as they’ll regenerate when the game starts.

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Reference Link:

On the page linked below there is a ready-made File that provides a mods folder containing the Resource.cfg, Override and Packages folders. As well as instructions on how to put it all together.

Installing Sims 3 Package Files/Setup and Files

NonaMena’s Tutorial on How To: Create and Use an Overrides folder.

A couple of links to help with Unzipping a file:

Zip and unzip files

How to Unzip a File

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