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How to install mods (in .package format) for The Sims 3


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  • First you need to have the latest version available: 1.67 for steam and retail disc and 1.69 for Origin. Both are compatible with 99% of all custom content (CC) available on the net (unless said CC is defective)
  • Check you have your mod folder configured correctly 
  • Refresh your cache every time you install or remove a package, otherwise your game might crash
  • Check for bad CC or possible conflicts using Delphy’s Dashboard


  • Rename packages that use special characters like []()-*!, underscores are fine
  • The more packages you have the slower you game will load and lag will appear in-game. Combine them
  • Use Nraas Mastercontroller to optimize the CAS menu so it loads faster
  • Use Kure’s CASP Editor to hide the clothes, hair, shoes, accessories, etc. made by EA that you don’t plan to use, that also helps CAS to load faster
  • Convert sims3pack to package with Multi-extracter

If I omitted something let me know

Edited by JoshQ
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