For these mods, in particular, Simmers will want to ensure they enable script mods in the game settings. Once that's been taken care of, players can use the best The Sims 4 Trait mods to fine-tune a Sim's personality. Updated April 18, 2023, by Rain Egan: The Sims 4 has changed significantly since the game went free-to-play. Sims can now gain three additional traits through gameplay, players can swap out personality traits based on the actions of Sims, and perhaps most significantly, infants have been added as a life stage. Now that the base game has undergone a significant overhaul, many may wonder if expansion packs are even worth it. With the help of mods, players can enhance traits in The Sims 4, rewrite some sections to improve clarity, and even update links to ensure that everything works with the most recent patch.