Also in:Halloween CC

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I included this Sims 4 summer nails cc because even though it’s designed for Halloween, the nails are stylish enough to fit a summer wardrobe. The Cookie Monster Halloween Nails are chaotic, campy, and ultra-long. They’re inspired by the Cookie Monster cartoon most of us watched, but in this set, the cookie body is chopped up into bloody pieces and spread over the nails. The base colors consist of blue and gray and are located under the Nails category. Note that these nails aren’t compatible with hats. But they have a unique aesthetic, making them a must-have in your summer wardrobe.
Follow these steps to install Cookie Monster Halloween Nails 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
Cookie Monster 89622744
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Published
December 6, 2025
Source
MustHaveMods.com
Last Updated
October 20, 2026