1) Download Slipstream Mod Manager (the mod manager used by this mod to patch FTL): https://sourceforge.net/projects/slipstreammodmanager/ 2) Extract it whenever you want (anywhere is fine). 3) In the Slipstream Mod Manager directory, copy this mod (the .ftl file) into the "mods" subfolder: SlipstreamModManager_1.9.1-Win\mods 4) In the Slipstream Mod Manager directory, double-click modman.jar and follow the instructions given by the program: SlipstreamModManager_1.9.1-Win\modman.jar 5) Check the box corresponding to this mod (ignore "Beginning Scrap Advantage 1.2" and "Engi Scrap Advantage 1.2"). 6) Click on "patch" and then you should be good to go.