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I just love this Water Sims 4 CAS Background by Nordica-Sims. This background is a tribute to the mystical world beneath the waves, perfect for those who adore the allure of mermaids. With its serene hues of blues and greens, it captures the essence of an underwater paradise, creating a dreamy backdrop for your mermaid Create-A-Sim (CAS) sessions. When I downloaded and added this CAS Background to my game I was surrounded by tranquil beauty and realistic aquatic scenes. I found this background to be ideal for fans of the fantastical and those who wish to add a splash of magic to their Sims’ lives. Hit the download link below, add the file to your mods folder, and let your creativity swim wild against this stunning aquatic tapestry.
Follow these steps to install Water Sims 4 CAS Background 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.
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Published
January 22, 2026
Source
MustHaveMods.com
Last Updated
January 25, 2026