How to Install Custom Content in Sims 4: A Complete Guide

Custom content — commonly called CC — is one of the most popular ways Sims 4 players personalize their game. From new hairstyles and clothing to furniture, build items, and even gameplay tweaks, CC dramatically expands what the base game and official packs offer. Installing it is straightforward once you understand the folder structure and a few key rules, but the exact experience varies depending on your platform, file sources, and how much content you're adding.

What Is Custom Content in Sims 4?

Custom content refers to player-made files that add new assets to the game without changing its core mechanics. This is different from mods, which alter gameplay behavior (though both use similar installation methods). CC typically includes:

• CAS (Create-a-Sim) content — clothing, hair, skin tones, accessories, makeup
• Build/Buy content — furniture, décor, wall coverings, flooring
• Pose packs — used with pose player mods for screenshots

CC files almost always come in .package format, though some items arrive as .zip archives containing multiple files.

Before You Start: Platform and Settings Check 🎮

Custom content is only officially supported on PC and Mac. Console versions of Sims 4 (PlayStation and Xbox) do not support CC or mods — this is a hard platform limitation, not a workaround issue.

On PC or Mac, you need to enable CC before the game will load it:

1. Open The Sims 4
2. Go to Game Options → Other
3. Enable "Enable Custom Content and Mods"
4. Optionally enable "Script Mods Allowed" if you're also using mods
5. Restart the game

Without this step, installed files simply won't appear in-game — a common source of confusion for first-time CC users.

Finding the Mods Folder

The game loads CC from a specific folder on your system. The default paths are:

If this folder doesn't exist yet, launch the game once with mods enabled — it will generate automatically. You can also create it manually if needed.

Important folder depth rule: The game only loads .package files up to one subfolder deep inside the Mods folder. Files nested deeper than that won't load. Organizing by category (e.g., Mods > Hair, Mods > Furniture) works perfectly. A folder structure like Mods > CC > Downloads > Hair would cause files to be skipped.

Step-by-Step: Installing a CC File

1. Download the file from a trusted CC creator site (popular communities include The Sims Resource, Mod The Sims, and various creator Patreons)
2. Extract any .zip or .rar files — use built-in extraction tools or a program like 7-Zip or WinRAR
3. Identify the .package files inside the extracted folder
4. Move or copy those .package files into your Mods folder (or an organized subfolder within it)
5. Launch the game — a prompt may appear asking you to confirm loading new content
6. Check your game — new CC should appear in CAS or Build/Buy depending on the file type

Some downloads include both a .package file and a mesh or texture file. Both must be in the Mods folder for the item to display correctly. Missing a linked file typically results in invisible items or pink/broken textures.

Managing Large CC Collections

Players who download frequently often end up with hundreds or thousands of CC files. A few things become important at scale:

• Load times increase with the number of files — this is expected behavior, not a game error
• The 50/50 method is a widely-used technique for identifying broken CC: remove half your Mods folder, test the game, then narrow down the problematic file by repeating the process
• CC management tools (like Sims 4 Tray Importer or Curseforge's mod manager) help catalog and organize files without manually browsing folders
• Game updates can break CC — after major patches, some CC may stop working until creators update their files 🔧

Variables That Affect Your Experience

How smoothly CC installation goes — and how much you can comfortably install — depends on several factors specific to your setup:

System specs play a direct role. A machine with more RAM and faster storage will handle large Mods folders with less impact on load times and in-game performance.

Source quality matters significantly. CC from established, well-reviewed creators tends to be cleaner and better maintained than files from unknown sources. Poorly made CC can cause graphical glitches, CAS errors, or even game crashes.

How often you update the game affects compatibility. Players who delay patches may have a more stable CC experience, while those who update immediately sometimes encounter broken files in the window before creators patch their content.

Your organization habits determine how manageable troubleshooting becomes. Players who sort CC into labeled subfolders can isolate problems far more easily than those with hundreds of unsorted files in a single folder.

The type of CC also matters — simple clothing or furniture swaps tend to be far more stable than CC that replaces base game assets or interacts with animations.

Most players find a rhythm that works for their setup — balancing how much content they add against performance and maintenance overhead. Where that balance lands is genuinely different for a casual player on a mid-range laptop versus someone running a high-spec desktop who plays heavily and screenshots frequently.