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Sims 4 CAS Background – Gothic Castle is a dark replacement for turning Create-a-Sim into an eerie gothic room. The space has stone walls, tall stained-glass windows, cobwebs, antique furniture, and glowing candles for a moody castle atmosphere. I recommend using this background when creating vampires, witches, spellcasters, goth Sims, and other supernatural characters. The creator also uses Helgatisha’s CAS room lighting in the preview images, which you can download separately if you want a similar lighting effect.
Follow these steps to install Sims 4 CAS Background – Gothic Castle on your Sims 4 game:
Download the mod file from the link above. Sims 4 mods typically come as .package or .ts4script files.
Open your Sims 4 Mods folder. The default location is: Documents/Electronic Arts/The Sims 4/Mods
Place the downloaded file directly into the Mods folder. You can organize mods into subfolders up to one level deep.
Launch The Sims 4 and go to Game Options > Other. Make sure "Enable Custom Content and Mods" is checked.
Restart the game if it was already running. The mod should now appear in your game.
Important: Always back up your save files before installing new mods. After Sims 4 updates, mods may need to be re-downloaded or updated by the creator.
Platform
The Sims 4 (PC/Mac)
Pro tip: If a mod stops working after a game update, check the creator's page for an updated version. Broken mods can cause the game to behave unexpectedly.
Created by
Simplywicked
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Published
August 27, 2026
Source
MustHaveMods.com
Last Updated
September 9, 2026