Hearts of Iron IV

Hearts of Iron IV

8,922 ratings
Hearts of Iron IV: The Great War
File Size
323.545 MB
Jun 8, 2016 @ 4:27am
Jan 14 @ 5:18am
38 Change Notes ( view )

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Hearts of Iron IV: The Great War



Status: Open Beta
Project Lead: Wolferos
Current Version: 0.6.2
Compatible with: Hearts of Iron IV "Cornflakes"
Supported Languages:
- English
- French (Integrated in the Mod, Version Améliorée)
- Russian (Integrated in the Mod, Спасибо https://www.strategium.ru)
- Japanese (日本語化MOD, +JP: The Great War)
- Polish (Polskie Tłumaczenie)
- Turkish (Türkçe Yama[paradoxfan.com])
- Chinese (Chinese Translation)
- German (warning, experimental stage)
- Korean (Korean Translation)
- Portuguese (warning, experimental stage)
- Spanish (warning, experimental stage)


One hundred years ago, a war in Europe erupted which would change the world as we know it. Men were forced out of their homes, from their farms and apartments, to fight in seemingly neverending trenches, gaining meters and meters of ground a day at the cost of massive casualties.

Hearts of Iron IV: The Great War, an overhaul mod for Hearts of Iron IV, puts you in the position of one of the countries of the world in World War One's time period. In an era where the stakes were high and risks even higher, you'll have to tread lightly when it comes to diplomacy. A single mistake or a single bluff gone too far could mean the deaths of millions.

Of course, that's not to say that the Great War is the only thing on anyone's minds. Revolution is flaring up in China and Mexico, Italy is rumored to have designs on taking Libya, and the Balkan States seem to be banding closer against one of their foreign targets. With all this conflict across the world, the Great Powers alone won't be having all of the fun.

The War itself has been modeled to match more closely the flow and style of war of World War I. Infantry virtually alone will rule the Battlefield at the beginning of the Conflict, before Planes and Armored Cars will take the field in good numbers. Trench Systems will see construction throughout Europe, until a mad engineer's dream, the Tank, rolls out of the factory and onto the Battlefield. All the while, massive fleets of massive Dreadnoughts will fill the Oceans, with all sides vying to wrest control of the waters.

With elaborate National Focus trees that delve deep into Alternate History, you may find two games with the same country end up completely differently. What if French Socialists began a great civil war during the mutinies? What if Italy decided to go hardline and fight with the Central Powers? In this Mod, the smallest divergences can change everything.

The Great War Mod, of course, is designed to attempt to emulate how Paradox themselves would have designed the scenario, so veterans of the World War II scenario and of the Hearts of Iron franchise will have no trouble adjusting. Even the new models, sounds, and animations are designed with Paradox's standards in mind. You may just settle into the game so quickly, you'll wind up with trench foot and shell shock before you realize it.


Two Starting Scenarios
  • 1910: The Powderkeg of Europe. Guide your nation through events like the Balkan Wars and Agadir Crisis as the road to war begins to be laid out.
  • 1914: The Great War. Jump straight into the action of the historical First World War. Can you avoid the mistakes of history, or will you find yourself falling into even worse traps?

New National Focus Trees for
  • German Empire
  • Austria-Hungary
  • France
  • United Kingdom
  • Russian Empire
  • Italy
  • Ottoman Empire
  • USA
  • Japan
  • Soviet Russia
  • Serbia
  • Bulgaria
  • Mexico
  • Netherlands
  • Belgium

New and unique weapons of warfare:
  • Brand New Doctrines designed for the era
  • Technologies simulating Gas Warfare
  • Armored Car, Airship, Light Machine Gun, Trench Mortar and Flamethrower
  • The New "Trench" building
  • More than 500 Technologies

Real events from the time period
  • The Assassination of Archduke Franz Ferdinand
  • Alternative Scenarios to begin the Great War
  • The Xinhai Revolution
  • Several steps of the Mexican Revolution
  • The October Revolution
  • Tons of Historic News Events for added flavor
  • Regional Events for all Major Powers

News 3D Models for
  • Infantry
  • Tanks
  • Planes
  • Armored Cars
  • Zeppelins


  • More Treaty events to replace the Peace Conferences
  • Interwar Period Events
  • More National Focus Trees
  • Improved GFX and 3D Models
  • More Technologies and Flavor Texts
  • More Country Leaders, Political Advisors, Generals, Admirals
  • Game Balancing and Improved AI Decisions
  • More than that to come...


Q: Is this Mod Ironman Friendly?
A: We've modified way too many files for this to ever be Ironman Friendly. If we had the sort of magic to make it so, we'd be in Stockholm right now.

Q: Is this Mod playable in Multiplayer?
A: Yes! It's a great way to spend a saturday night, just make sure you boys don't let carried away and let that stretch to monday morning.

Q: Any recommended country?
A: The German Empire, the Austro-Hungarian Empire and the French Republic are always a good choice to start but you are free to try any country that you want.

Q: This Mod seems cool! Can I help you?
A: Yes, you can help us, we have a GitHub Repository[github.com] for that.

Q: Will this Mod include Interwar Period and World War II?
A: We have already starting to work slowly on the Interwar Period and we have included some Vanilla National Focus for WW2.

Q: Where can I download the Mod?
A: We strongly recomand to use the Steam Workshop Version but you can download it on Mod DB or on NexusMods[www.nexusmods.com].

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Flickering Flags Fix made by Chairman Meow
Austro-Hungarians Voices made by Geodomus


Show us your Support! It kept us motivated through out all the development of the Mod. Don't forget to like us on Facebook[www.facebook.com], follow us on Twitter and Subscribe to our YouTube Channel.
Popular Discussions View All (555)
Jan 17 @ 10:20am
PINNED: Bugs Reports 0.6 ~ 0.6.1 ~ 0.6.2
17 hours ago
The Schlieffen plan?
Jan 13 @ 9:56pm
The Great War: Multiplayer Games [Discord]
< >
koheikamei7 9 hours ago 
please fix
KMT FTW 14 hours ago 
Who is Asir
kaskader 17 hours ago 
Game crashs
the Great war always wont start.....why.....
Wüstenfuchs Jan 19 @ 2:09am 
Fix endless war with asir
Delpheus Jan 18 @ 11:00pm 
Delpheus Jan 18 @ 10:52pm 
I read the patch notes - you claim you fixed the Schlieffen plan, but its still in fucking 1915!!!!???
Tiger 2 Jan 18 @ 3:22pm 
make a chinese focus tree
Deff Jan 18 @ 2:21pm 
ottomans start at war with assir, a non existant nation?
Spurdo Spärde Jan 18 @ 9:52am 
Why is mussolini the leader of Italy?