Once installed, the content is bundled into. Before being installed, they're in the Downloads folder inside the Sims 3 folder, from where the launcher can read them. Sims3Packs and installed through the launcher. The other type of custom content is downloaded as. If you didn't create the Mods and Packages folders and put any files inside, then you don't have to worry about this. package-based files: these are installed into Mods > Packages just like mods are. There are two types of custom content in Sims 3.
