
Main Character Energy is our first first-party trait pack: four CAS personality traits, each with a permanent low-weight moodlet and a custom icon.
The traits:
The buffs are weight 1 on purpose. A trait that locks your Sim into one emotion forever gets old fast — these nudge the baseline instead, so your Delulu Sim still gets sad when the stove catches fire. They just recover suspiciously fast.
Details: base game only, no packs required, Teen through Elder. Pure tuning mod, so you don't need Script Mods enabled — just "Enable Custom Content and Mods" in Game Options. English text ships to all 18 game languages.
Install: drop the .package file into Documents/Electronic Arts/The Sims 4/Mods, enable custom content in Game Options, restart the game and check the trait picker in CAS.
Follow these steps to install Main Character Energy — Sims 4 Trait Pack (4 Custom CAS Traits) 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
MustHaveMods
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Published
July 3, 2026
Source
MustHaveMods.com
Last Updated
August 23, 2026