Hearts of Iron IV

Hearts of Iron IV

4,385 ratings
Hearts of Iron IV: The Great War
File Size
302.211 MB
Jun 8, 2016 @ 4:27am
Nov 11 @ 2:09am
29 Change Notes ( view )

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Hearts of Iron IV: The Great War


Status: Open Beta
Project Lead: Wolferos
Current Version: 0.5
Compatible with: Hearts of Iron IV, Patch 1.4.2 "Oak"
Supported Languages:
- English
- Turkish (Türkçe Yama[paradoxfan.com])
- Russian (Integrated in the Mod, Спасибо https://www.strategium.ru/)
- French (Integrated in the Mod, not finished, experimental stage)
- German (Integrated in the Mod, not finished, experimental stage)
- Japanese (日本語化MOD, +JP: The Great War)
- Korean (The Great War - Korean Translation)
- Spanish (Integrated in the Mod, not finished, experimental stage)
- Portuguese (Integrated in the Mod, not finished, experimental stage)
- Chinese (本MOD提供汉化版本,汉化补丁链接)


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 Hearts of Iron IV: The Great War, the smallest divergences can change everything.

Hearts of Iron IV: The Great War, 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
  • The German Empire
  • The Austro-Hungarian Empire
  • The French Republic
  • The United-Kingdom
  • The Russian Empire
  • The Kingdom of Italy
  • The Ottoman Empire
  • The United States of America
  • The Empire of Japan
  • The Soviet Union
  • Serbia
  • Bulgaria
  • Mexico
  • Netherlands
  • Belgium

New and unique weapons of warfare:
  • New Armored Car unit
  • Brand New Doctrines designed for World War I
  • Technologies simulating Gas Warfare
  • New Light Machine Gun, Trench Mortar, and Flamethrower Technologies
  • 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
  • And so much more...

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


  • More Treaty events to replace the Peace Conferences
  • Interwar Period Events
  • More National Focus Trees
  • Improved GFX and More 3D Models
  • More Technologies
  • More Flavor Texts
  • More Country Leaders, Political Advisors, Generals, Admirals
  • New Language Localisation
  • 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 with in 1910 or 1914 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 World War II.

Q: Where can I download the Mod?
A: We strongly recomand to use the Steam Workshop Version but you can also download it on Mod DB.

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  • DevilIris
  • MasterWaifuman
  • skullbe
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  • Stluvik
  • MurderMountain
  • M3Henry
  • fedcba
  • MrBlazzar
  • Citofis
  • Jadasong
  • Zkuhh
  • Vale
  • Crouching Lemur
  • Tsunami
  • Zak MacKay
  • Seonake
  • Benoît (Mundus Bellicus)
  • Darksaber501st
  • lahvan
  • Mixmaximonster
  • tihhoni
  • Felicianum2
  • Polemarque
  • AlainEtCo
  • Kraftbruehe
  • Xabi273
  • Mindeufair
  • EnderVod
  • Tigerass
  • Shkiv
  • BaCe21
  • Felixiinho

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


Your support is very important for us! It kept us motivated through out all the development of the Mod. Don't forget to like us on Facebook, follow us on Twitter and Subscribe to our YouTube Channel.
Popular Discussions View All (382)
Dec 10 @ 12:26am
Ottomans why
8 hours ago
PINNED: Bugs Reports 0.5
Dec 1 @ 5:54am
From The Great War to the Second World War!
Golden Falcon
< >
Birdman2001 15 hours ago 
@Wolferos you should add back the old portraits of the mod and and nerf belgum and France and buff germany I relly love this mod and hope tha you will fix this in the future
etymon 20 hours ago 
Oh boy, I'm really sorry to say it, guys, but instead of getting rid of certain flaws that have always been there in the Great War Mod you have added some new ones. The Russian Revolution is no longer happening, instead Russia simply turns communist as soon as the Communists have more than 50% popularity; the same thing happened with Germany in my last game, the latter still being at war against the Entente whilst turning into the Socialist Republic of Germany and remaining in its alliance with Austria-Hungary. Annoying!!!! I was so happy when I saw that there had finallly been an update. However, I have so far been nothing but disappointed.
Ranger Softy Dec 9 @ 5:15pm 
Lol. Something strange going on in my game. I'm playing with Canada and it's 1920. The central powers are still going strong, in fact they might even be winning the war. They beat SU in 1915, then we knocked the Ottomans out, but they got Romania beat. It's getting sort of boring and interesting at the same time. Is there a scripted ending to WW1 or can it theoretically keep going on until the end of the scenario?
╬ C H E M I K E R ╬ Dec 9 @ 2:55pm 
may i suggest that you could add a 1919 start date? that would be awesome!
Dwarflordfilms Dec 9 @ 11:41am 
Can you make a Russian Revolution start date.
Generalis Dec 9 @ 10:41am 
Should add Nancy and East Wallonia so you can recreate kaiserreich :PPPPPP
kevin Dec 9 @ 7:55am 
Why is england already in the entente in 1911 WTF
Birdman2001 Dec 9 @ 6:10am 
Why The fuck every game I play france and Belgum Beats german Fucking fix this omg
Mr.Rattlebones Dec 9 @ 4:23am 
A definite improvement is needed on the Russian Revolution and Civil War. What about Anarchist Ukraine? The Green Armies? It seems very Glitched atm with it being a complete cluster fuck, Maybe also add a 1917 start date? Other than that Great Mod and im glad development has resumed.
oo Dec 9 @ 4:10am 
v1.4.2 comon