This program installs mods for Dead Island Riptide Definitive edition :)
THANK YOU FOR USING DIDMM BY FireEyeEian.
Just run the DIDMM_Version#.exe and follow the direction in the window then select the modifications you would like to enable.
When you have the options you'd like to enable selected all you have to do then is hit the "Confirm modifications" button in the top right of the window...
BOOM your game is modded and ready to play.
Enjoy :)