Also in:Y2K CC

If you want to transform your CAS into a stunning area, get Xureila’s “Nostalgic” 3D CAS ROOM. This is one of the best Sims 4 cc finds for making your gameplay more immersive and enjoyable. It removes the boring bluish CAS background and replaces it with a fully decorated bedroom. The bedroom has hues of pink and gives off that nostalgic Y2K aesthetic. Note that you get two versions of the CAS, one with a white mirror and another with a black mirror. You can only download one to add to your gameplay.
Follow these steps to install Xureila’s “Nostalgic” 3D CAS ROOM 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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Created by
Xureilas 3d Cas 103683033
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Published
December 10, 2025
Source
MustHaveMods.com
Last Updated
September 12, 2026