Update history
Latest Hearts of Iron IV updates
Search patches, hotfixes, and dev posts. Load more to keep browsing the timeline.
Browse updates
Published changes
Search updates. Filter by source or date. Open any row for the full patch notes, or load more to continue the timeline.
- Hearts of Iron IV
Dev Diary: Combat Width & Soviet Feedback
Greetings all, Today we have two important topics to cover, for which we have reinstated @podcat with a battlefield commission, in order to detail our latest efforts to combat the width meta. In addition, Comrades @Brat…
- Hearts of Iron IV
Dev Diary - Bag of Tricks #3 (The Sequel?)
Greetings all! Today’s dev diary contains the details of a few smaller features coming to the table in No Step Back. In addition, I’ll get ahead of the curve here and point out that there will be no diary next week - we…
- Hearts of Iron IV
Dev Diary: Trains #2 - Railway Guns
Hello there, C0RAX again. It’s time again to reveal some more secret information that was hinted at in the last dev diary. Specifically this week will be revolving around the final part of railways and trains. So withou…
- Hearts of Iron IV
Dev Diary: Trains and Supply
Greetings, and welcome back for our last look at the supply system that ships with the Barbarossa update. As you all know, I’m British, and in Britain the trains never run on time - I couldn’t possibly break with this t…
- Hearts of Iron IV
Dev Diary: Bag of Tricks #2
Greetings all, and welcome back for a slightly less content-focused dev diary than our latter soviet efforts. Today we’ll be covering a couple of smaller additions to be added in NSB, some of which have been hinted at b…
- Hearts of Iron IV
Dev Diary - Soviet Union: Part Three
“Comrade Bratyn, you have been found guilty of counter-WW2 activity. You have been seen consorting with citizens and even figurehead ideologues of the Imperator team. Undeniable proof of work -by your hand- can be seen…
- Hearts of Iron IV
Dev Diary: Soviet Union Rework - Part 2
Hello comrades, and welcome back to another DevDiary for No Step Back. After Comrade @ManoDeZombi (as chairman of the People's Commitee for Focus Tree Production) introduced you to the historical and shared branches of…
- Hearts of Iron IV
Hearts of Iron has joined Instagram!
Greetings Comrades & Generals! We know you're ever watchful for more No Step Back information, and we'll deliver with this weeks dev diary, but for now we wanted to take a moment to talk to you about Operation Zoomer. A…
- Hearts of Iron IV
Patch 1.10.8 - Multiplayer Hotfix
Added server visibility settings to Steam MP (Public, Private, Friends) Update MS as well to keep version parity.
- Hearts of Iron IV
Dev Diary - Soviet Union Historical and Common Branches
Здравствуйте товарищи! - Greetings comrades! And welcome to a new Hearts of Iron 4 Dev Diary! I hope that you are all having a great summer, and that you are prepared for a little reading, because today we’ll be talking…
- Hearts of Iron IV
Hearts of Iron: Humble Bundle
Take a seat at the table, General. It’s time to fight. Paradox Interactive has helped build one heck of a tactical bundle! Starting with Hearts of Iron IV: Cadet Edition at its lowest price ever (just $1!), enjoy the fu…
- Hearts of Iron IV
Dev Diary: Supply #2
Greetings all, and welcome to today’s dev diary on the huge supply system update coming with the barbarossa update. Before we begin, I’ll leave a heads up that this will be the last dev diary before we break for summer,…
- Hearts of Iron IV
Scheduled Downtime
Attention Players! Our databases will be undergoing scheduled maintenance and upgrades during this time period. This will affect all games and services. You will not be able to log into your Paradox Account during the d…
- Hearts of Iron IV
Hearts of Iron IV Dev Diary: Officer Corps 2
Hello there C0RAX, here! For my first HoI dev diary, I’m here to show you the second part of the Officer Corps, a new way of personalising your military that will be included as part of No Step Back and the Barbarossa u…
- Hearts of Iron IV
Dev Diary - Officer Corp
Greetings all, Arheo here! For my first HoI dev diary, I’m here to introduce the Officer Corps: a collection of new features that will be included as part of No Step Back and the Barbarossa update. For quite a while, we…
- Hearts of Iron IV
Dev Diary | Bag of Tricks - Part One
Another Wednesday means time for another update! Today its time for a "bag of tricks" diary which means its an assortment of smaller features and improvements. Todays selection has several things you guys have asked for…

