The manager even handles your Fallout 4 load order, too! Nexus Mods They automatically begin downloading via the standalone client, then you can enable and install them at your leisure. Nowadays, you download the mod manager client, sign in to your account, and begin downloading mods from the website. Long gone are the days of manually downloading and installing game mods, all thanks to the various mod managers, like Nexus’ Vortex. How Do I Download and Install Fallout 4 Mods? The two most common methods are via Nexus Mods and Bethesda’s workshop, where they feature various game modifications brought to you by content creators worldwide. When it comes to installing Fallout 4 mods, you have a few options.