Additionally, we’ll provide instructions on recovering a missing mod folder. This guide will explain how to fix mods not showing up in Sims 4 on Windows and Mac PCs. However, sometimes, newly downloaded mods fail to show up in the game, and consequently, don’t work. They let you bring fantasies to life and add depth to an already extensive sandbox simulation. Mods are a major part of Sims 4, adding endless new features, from personality tweaks to unlimited money.