The Great War is a WW1 total conversion for Hearts of Iron IV.
Hearts of Iron IV: The Great War - Open Beta 0.6 (11 November 2018)
We have released a new version of the Mod for the Centenary of the Armistice!
Compatible with: Hearts of Iron IV | Version 1.5.4 "Cornflakes"
Remark: With or without a Paid DLC your gaming experience on The Great War will be very similar. Have fun!