Installing Custom Content in .Package File Format

This guide will be a step by step, very simple breakdown of the set up required to install .package files for The Sims 3.
(Based on PC set up – but I’ve added some guidance for Mac users, there really isn’t that much difference)


Your game must be updated to patch 1.12 or later for this set up to work. If you haven’t updated – you’ll have to do it now or you won’t be able to install your packaged custom content or mods.

Before we start, I’ll run through some of the terms you’ll come across in this tutorial and while downloading custom content (CC)

  • “archive” files: These include .zip, .rar and .7z files. They allow quicker download speeds, as the files inside them (the ones we need) are compressed. You need a special program (such as 7-zip, WinRar, or Keka) to open them.
  • “Resource.cfg” file: This is a small text file which tells the game where to look for CC. It’s placed in one of the files we’re about to create.

Step 1.

Before you create any new folders or download anything, you’ll need to install 7-zip (for PC), or Keka (for Mac) so you can unzip your CC.

They’re both free, safe and easy to use! Go to or and install the one that matches your Operating System (OS).

For PC users:

7-zip supports both 32 and 64 bit systems – If you’re running Windows 7, go to Start, then Computer – select “System Properties” at the top of the page.



(obviously the details shown here will be different for you – this is just a screenshot of my system properties to show where to look. Yours will show the details of your own computer)

If you’re running another version of Windows, go to Start, then Computer. Double click on your hard drive icon – the one that says OS (C:) and you’ll be taken to a list of folders.

In that list, if you have a folder called “Program Files” AND one called “Program Files (x86)” you’re running a 64 bit system.
If you just have “Program Files” by itself, you’re running a 32 bit system.

Go back to the 7-zip site, and download the one that matches your system:

Follow the on-screen instructions to install, it doesn’t take long.

When it’s done, leave it alone for now, you don’t need it just yet!

Step 2.

We need to create folders for your CC.

Go to: Documents > Electronic Arts > The Sims 3

It’s very important to make sure you’re in the DOCUMENTS library and NOT your program files. 

Right click anywhere in the white space and create a new folder. Name it “Mods”.

Double click your new Mods folder to open it, and again, right click to create a new folder. Name this one “Packages”.

Progress Check!

When you go to Documents > Electronic Arts > The Sims 3, you should have your Mods folder in there somewhere (your computer will probably put all the folders in alphabetical order).

When you open your Mods folder you should see your Packages folder inside it and nothing else.

Got that? Great! Your files are done!

Step 3.

Your last step before testing is to tell the game where to look for all the CC you’ll be saving in your new folders.

To do this we need a Resource.cfg file.

Use the following link to a working resource file which will work for all game versions and patches. (It’s completely safe – It’s a copy of one I wrote and use myself, so it definitely works!)

Save the file to your Mods folder. But make sure it’s not in the Packages folder – it has to stay in the Mods folder!!

Download here

If your system renames the file to “resource.cfg.txt” (this happens quite often with Windows Vista), you’ll need to right click and select ‘rename’. Take off the .txt part so you’re left with a file called “Resource.cfg”

You should now see this when you open your Mods folder:

Once you’re done with this, you’re finished the set-up!


The quickest way to test your set-up is to download the ‘NoIntro’ package from Mod The Sims. It’s a small mod that takes the intro videos out of the game start up, so you skip straight to the loading screen.

You’ll need to be logged in to Mod The Sims to download it, so if you don’t already have an account, register first. (It only takes a second and is completely free, just follow the link below and create your account by clicking the link in the top right corner of the page)

To download the mod, use the following link (register first if you need to), click the ‘download’ tab. then click the ‘’ file.

Click save once the pop-up loads, and save the file to your Mods folder. (Documents > Electronic Arts > The Sims 3 > Mods)

You should now see this in your folder:

This is where we need 7-zip or Keka!

We need to extract the package file from the zipped folder.

PC users:

It’s easier to do this using 7-zip, even though Windows can actually open .zip files. Plus it’s good practice for when you’re installing .rar or .7z files that Windows can’t open!

Right click on the No Intro file you just downloaded.

Click ’7-zip’, then ‘Extract Here’.

The .package file (which is the one we need!) will appear, and you can delete the .zip file.
Mac users do the same thing with Keka (the options might differ slightly, but the functions will be the same)

You should end up with this:

All you have to do now is move the .package file (just click and drag) to the Packages folder and you’re done!

Run the game as normal. If you skip straight to the first loading screen and don’t see the intro videos – You’ve done it! Now you know what you’re doing - go on a downloading spree!!

If you’ve tried the test file and you still see the intro videos, then something’s not quite right with your framework. It will definitely work if you’ve got everything in the right place, so take a look at this page: and see if you can spot the problem.

Any problems that you can’t seem to fix by following instructions in the link above, comment or email me at




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