• This is the choice if
  • you have an EA world that you have already started editing, for example to add your own Lots or move things about in edited CAW file.
  • you're pretty handy in CAW and do not like to wait for others or simply like to do things yourself.

• Choose this option if
  • you have a user-customized EA world, where the World has already been uploaded and shared in a .Sims3Pack file, and the world creator is either no longer active or not interested to go back and edit their work to incorporate the fixes.
  • you cannot use CAW (for hardware or other reasons) or Option #3 failed, this method is guaranteed to work, no matter the circumstances. This method is also the fallback method.
  • your ISP impose a download cap.
• You need to download the resources (@10MB) and edit the .world files in s3pe. Would need to ensure you download and import the correct resources for the world you're editing. For instance, importing Sunset Valley.world's resources into China.world is a Very Bad Thing!

• Download the .world files - this is simplest way of having fixed worlds, BUT you have to
  1. rely on someone to do the "DIY-ing in CAW" & the "Editing in S3PE",
  2. have a fast Internet connection to download a huge file (@100MB) for each world, and
  3. know what to do with multi-part files.
• This option is most ideal for the untouched EA default/store worlds that you have installed.

• Knowledge of s3pe.
• Willingness to read this guide (and others linked) carefully and following instructions to the letter.
• Lots of patience to learn a new tool - CAW. Tutorials on how to use CAW are available in
  • Tutorials:TS3 CAW Tutorials
  • CAW Forum Tutorials section
• Learn how to use CAW, and editing premade worlds by reading this guide: Editing Premade Worlds (and its original thread for more tips and background info)
• Understand the business of routing and painting an area to be non-routable by reading this guide: Tutorial: Basics on sim-routing in Create a world-tool
• Knowledge of additional tools covered in other 2 options, if any.

• Willingness to read the guide carefully and following instructions to the letter.
• The knowledge to use s3pe.

• Willingness to read the guide carefully and following instructions to the letter.
• Downloading files, and basic operations like copy+paste & rename a file, among other things.
• Unzipping/Un-archiving multi-part files.
• How to recompressorize (for Store worlds).

• A machine capable of running CAW.
• Create-A-World tool.
• S3PE.
• Additional tools covered in other 2 options, if any.

• S3PE.
• Additional tools covered in Option 3, if editing Store Worlds.

Default Worlds

• A program that handles multi-part 7z/zip/rar files.

Store Worlds

• TS3 Recompressor
• Ella's run.bat from the Shared folder at Google Drive

Optional

• Twallan's "The Porter" at NRaas Industries website
• A Sims3Pack extractor/unpacker
  • Delphy's Sims 3 Pack Multi-Extracter
  • simlogical's s3su