This is a step by step guide into creating a Mods Folder, for anyone who has never used mods before and doesn't know where to start. It needs to be created or added into your sims 3 folder in documents. You will either need to create one or download one. Creating a Mods Folder/Installing Mods Step by Step Guide Updated: January 2024 Sims 3 does not come with a ready-made mods folder.