Thank you for you tutorial! It's great!

I was wondering if it works with custom worlds too, because I just tried doing what you said and it didn't work with it.

Well, I'm going to keep trying but if you guys know something about please help me! 

I was so hopeful it would work, but unfortunately it didn't. 

When I put the .world file on Program Files\Electronic Arts\The Sims 3\GameData\Shared\NonPackaged\Worlds I still can't choose any towns on the game.
I'm sending a screenshot of the start screen.

I tried putting on Program Files\Electronic Arts\The Sims 3 World Adventures\GameData\Shared\NonPackaged\Worlds but it still didn't work.

When I downloaded Riverview it worked just fine, I don't understand why I can't install other worlds.

Do you guys think it's because my game is patched?

Please don't give up on me

Thank you for this post, it really helped me installing custom content.

But...
It doesn't work with worlds because the .world files you have to put on the folder "InstalledWorlds" in "My Documents"...
It doesn't appear in "Installed Contents" or in the game although the .world is in the "InstalledWorlds". Same problem as the CC.

Does anyone have this problem too?
I really want to install new worlds, I'm kind of sick of Riverview and Sunset Valley