The Great War is a WW1 total conversion for Hearts of Iron IV.
Hearts of Iron IV: The Great War - Incremental Patch Open Beta 0.3.1 (15 June 2017)
WARNING: This is an incremental patch, it will not work if you don't have previously installed the Open Beta 0.3
If you want to contribute to this great project, discuss, share your ideas, it's time to join us on GitHub.
Compatible with: Hearts of Iron IV | Version 1.4.0 "Oak"
A complete Changelog is available here:
Remark: With or without Paid DLC your gaming experience on The Great War will be very similar. Have fun!