Houses and Sims will come as Sims3Pack files. Anything that is a Sims3Pack is installed via the Launcher or via a Sims3Pack tool. This tool is concerned only with .package files – aka the actual “true” custom content (such as the No Zzzs, the no mosaic, the skin tones, and the patterns).

General rule of thumb: Is it a Sims3Pack? Use the launcher. Is it a .package? Use this tool…

This tool will automatically set up your game so you can use custom content .package files for The Sims 3. Once set up, you can just double-click the files to put them where they need to go. No need to mess with Resource.cfg yourself or create any folders – just run the program, and from then on, you can just double-click the files.

You still have to double-click files to install, but everything else is done for you!

You can also right-click on a file to send it to a particular folder, so you can have sub folders and keep your downloads organized.

Check it out here!