This guide assumes no previous knowledge of modding to make it accessible to everyone, so some details may appear trivial to you. Some of the steps are 'to be on a safe side'/ 'just in case' and might not be entirely necessary.   Last updated: 28 Oct 2017   Step 1 - Buy and Install Fallout 4 There is no need to install any DLCs for Four-Play to work.  Make sure you have the latest version of the game (1.9 - released 6 Feb 17). Steam should automatically keep you