STEAMYDATA

Hearts of Iron IV — patch notes and updates

Stored observation / content update:

Dated developer announcements recorded from Steam. Open the source for the complete update.

UpdateDateExcerpt / source
Peace For Our Time | Patch 1.18.12026-04-29Generals! Here’s your first update since we released Peace for our Time last week. Fire up HOI, annihilate your enemies, get your puppets under control and connect with your allies. Then, let us know your thoughts, and, should you find any more bugs, remember to drop them in the HOI IV Bug Reports forum. Gameplay The Bohemia formable now uses a golden colour Poland now has a small branch that gives them access to Czech MIOs/Concerns Swapped several focus icons from the CZE political communist branches that used mismatching art from the Soviet 2D art pack Added a new focus to the Czech tree - "Wielding the Hammer" which gives a new idea Added
Hearts of Iron IV Community Recap2026-04-28Generals! It’s time for your latest briefing. Make sure you read it, and comment below. Makeship Giveaway Results Last week we announced the HOI and Makeship Giveaway (Plushie and Socks) and you gave us some very fun and interesting responses. We read through all of them and without further ado the winners are: Imladris78, you get a plushie! Pingu power, you get a plushie! Mayor Faizan, you get a pair of Naval Feet socks! And, select_L0L, you also get a pair of Naval Feet socks! Should we make achievements easier? Ideally we’d love for you to use the form, but if you can’t access it or prefer to answer in this thread that works too. They’re f
Peace for Our Time | Available NOW!2026-04-22Generals! Now that you’ve watched your entertainment; the first order of business: The 1.18 Patch Notes that we posted yesterday, read them. Want to roll back a version? You’ll find those instructions there as well. It’s time then to roll back the date to 1936, and experience the dark days leading up to the Second World War; welcome to Czechoslovakia! Features of Hearts of Iron IV: Peace for Our Time include: New Czechoslovakia Focus tree: Democratic path: Balance the needs of various political factions and help the Allies ensure they will honor their commitment to protecting Czechoslovakia. Or strike out on your own path to defend Central Eu
Peace for Our Time | Patch Notes2026-04-21Generals! Tomorrow we’ll be releasing Peace for our Time and you know what that means, not just Patch 1.18 but a whole bunch of Patch Notes. Additionally, keep reading to find out how to roll back in case you have a save you want to finish first. Balance Changed faction contribution from war score from 0.125 to 0.1 Balanced warscore from ships, halved the contribution from sunk IC, which should bring it more in line with land combat warscore gain. Gameplay Taking Royal Indian revolt now only require you to have >50% communist support. Threaten the princes now give 10% communist support. Added a new feature where you can "shift + click" on a r
Peace for our Time Soundtrack2026-04-21Generals! 🎵 Peace was never silent. Listen to the official Peace For Our Time soundtrack and let us know your favorite track. You can also listen on Spotify and Apple Music. Additionally, for those within marching distance of Stockholm, the music of Paradox takes to the stage. Live. In concert! Paradox In Concert And finally, check back later today for the official Peace for our Time Patch Notes!
Peace for Our Time | Art, Achievements and Miscellaneous Content2026-04-20Greetings, commanders! In this last but definitely not least developer diary, we will show some smaller mechanics that are shared across all focus paths. Following that, we will preview the art and other assets you will find in the DLC. Army Readiness The last new mechanic that we will be discussing is the new Army Readiness Balance of Power, enabled briefly after the game starts. The Czech army, while well prepared to face the Sudetenland crisis in 1938, was being undermined by various forces within the country in the lead-up to the Munich conference. This balance of power will represent that. The army wouldn’t mind if a few Korunas went mis
HOI and Makeship Giveaway (Plushie and Socks)2026-04-17Troops! 🏆 At ease, and listen up. We're sending reinforcements your way in the form of a Snuggato Jumbo Plushie and Feet Admirals Socks. The fluffiest operation we've ever run. Here's what you can win: A 100%-Discount Code for the Makeship Snuggato Jumbo Plushie A 100%-Discount Code for the Makeship Feet Admirals Socks Enter the giveaway on the Paradox Forums 👉 https://bit.ly/4chLYoY (This Promotion ends at 23:59 CEST on April 20, 2026.)
HOI IV | Open Beta III2026-04-17Generals! Open Beta Open Beta 01 Open Beta Update 02 Generals! Best to leave your feedback for this specific beta version in this thread. Bugs go in the bug report forum. You can also start a separate thread, just make sure to reference this open beta and mention something like in the title. I’m Zwirbaum, Game Designer for Hearts of Iron, and after a brief interruption last week, we are coming back with another update to the Open Beta. My ‘internal’, initial idea for Open Beta was to run until the release of Peace for our Time, and with the release date announcement this time seems to be coming to the end, as next week's Friday will be alread
Peace for Our Time | Alt-Historical Czechoslovakia & Divided Nation Rework2026-04-16Good day, commanders! I’m marijn211, and I will be showing off the ahistorical paths of Czechoslovakia, after that SpicyAlfredo will take over to show the reworked Divided Nation mechanic. Monarcho-Fascist Branch Like the democratic and communist branches, the authoritarian branches share part of their foreign policy. Of these, the monarchist path focuses most on expansion, while the fascist path offers a few more alliance options. With a focus on cores, the Bohemian-Slovakian kingdom can integrate lands from Austria to Danzig, based on the lands of the Bohemian crown across different points in history (though they obviously never owned all o
Peace for Our Time | Democratic & Shared Branches2026-04-15Ahoj! I’m Spicyalfredo, joined by marijn211 and Abbus. We can’t wait to finally show you what we’ve been working on with the “Peace for our Time” focus pack! This DLC will feature a complete rework of everything Czechoslovakia, with a few extras that we will show in this and the following dev diaries. We’ll jump right into the Historical Context that Czechoslovakia finds herself in, before diving into the democratic and shared branches. Historical Context Czechoslovakia finds itself in an interesting position at the end of the first half of the 1930s. The worst effects of the Great Depression are now behind her, and the country is looking to
Developer Diary | RDA Peace for Our Time2026-04-14Generals! The time is soon upon you to defend the borders of Czechoslovakia with the upcoming release of Peace For Our Time. In this Focus Pack you will be able to change the course of the, quite frankly, tragic history that befell the nation in reality. There are many paths to take, but I think we can agree that we should start with undoing the Munich Agreement (sorry Neville). Peace For Our Time will be released on the 22nd of April and is part of the Expansion Pass, but can also be purchased stand-alone. We hope you will enjoy this collaboration that we’ve done with some of our modders. See you on the frontlines! The Hearts of Iron IV: Pea
HOI IV | Open Beta Update (No Client Change)2026-04-10Generals! I’m Zwirbaum, Game Designer for Hearts of Iron, and today I will be the bearer of bad news. Today there will be NO Open Beta Update. We should return to the regularly scheduled beta updates next week. Thanks for reading, and until next time, farewell! /Zwirbaum If you want to join the Open beta, but are unsure how to, check out the steps that are covered in the very first Open Beta announcement HERE The latest beta client is Musketeer v1.17.5.2.9135 (050f) Open Beta Update III Notes New Notes next week! On to plushier news.. Did you miss the recent Intel briefing from Command? A new Pride of the Fleet has been spotted over the Horiz
Studio Gold Update | April 20262026-04-03Hello Generals & Admirals! It’s been a few weeks since the release of our cosmetic pack “Warships of the Pacific”, and we’ve released two hot fixes. And I thought I would take some time to give you all an update on what is happening in the studio. Developer responses to this will be a bit slower than normal, as Sweden is out of office until Tuesday. Open Beta As some of you know we have a current open beta available where one of our game designers is looking into rebalancing the navy. We are aware of the submarines being a bit too easy to spot now, and some of the changes related to that in the open beta, will be released with Peace for our T
HOI IV - Open Beta Update II2026-04-02Generals! Open Beta Announcement Open Beta Update I Best to leave your feedback for this specific beta version in this thread. Bugs go in the bug report forum. You can also start a separate thread, just make sure to reference this open beta and mention something like in the title. I’m Zwirbaum, Game Designer for Hearts of Iron, and this time around Open Beta arrives a little bit earlier - on Thursday, instead of the usual Friday! (Good Friday in Sweden is a Bank Holiday). Because of the faster release of this update than normal, this means that it will spend less time in the oven than usual. Most of my focus right now will likely continue on
Dev Corner 2601010 - TaoG Achievement Suggestions2026-03-31Generals! It’s time for another Developer Corner. For more info on how we run these, make sure to check out this post. Now onto the Dev Corner; We are now reaching the point in Thunder at our Gates’s development where we’re starting to think about what achievements to put in the game. To make an achievement we need something that is, of course, achievable in game, has a good title (puns very much appreciated here), and a cool suggestion for an icon. We also like to have a mix of things that are relevant to the countries and mechanics released in the DLC. For this DLC that would be Australia, Siam, Indonesia, Army HQs and Ship Captains. So, th
HOI IV - Open Beta Update 012026-03-27Generals! (Following our Open Beta Announcement) We have now locked the first OB thread, so be sure to continue leaving your feedback in this thread. Bugs* go in the bug report forum. You can also start a separate thread, just make sure to reference this open beta and mention something like in the title. I’m Zwirbaum, Game Designer for Hearts of Iron. It is Friday and it is time for the first update to the Open ‘Balance’ Beta. There have been quite a number of responses to the beta, on the forum, Reddit, Steam or Discord channel (if there have been more places, I may have missed it somewhat), which definitely felt great! Unfortunately, while
Warships of the Pacific - Hotfix, 1.17.5.22026-03-26Admirals! Here’s a small hotfix for Warships of the Pacific, 1.17.5.2 Patch notes: Bugfix Fixed issue causing only a single support model to be shown in division designer Fixed a bug where AI or other players updating division templates would be affecting your template updates (UI only) Added several missing tank pools for various tank models so they show up correctly Fixed an issue where a debug 3D model would show after disabling equipment in the division designer
Developer Corner 2602001 - Country Selection Screen2026-03-24Generals! It’s time for another Developer Corner. With the addition of more countries when we released No Compromise, No Surrender last year, we just managed to fit the new countries in the country selection screen’s flags section. It was an interesting challenge, but using some pixel precision we managed to squeeze them all in. Now, with the release of Thunder at our Gates around the corner, we’re facing the same problem; the UI is maxed out and there is no more space for more flags. Countries abound, where does it end?! In the next image the pink line shows the smallest screen sizes that we support. As you can see we cannot simply make the
HOI IV - Open Beta2026-03-20Generals! I'm Zwirbaum, Game Designer for Hearts of Iron, and today I will be bringing up to you a new Open ‘Balance’ Beta that we will be running for the near foreseeable future. As opposed to the recent open betas, like for our War Effort patch (1.17.4), this beta will be much more focused on a specific area of gameplay, it will not contain any new focuses, paths, or anything like that. The main purpose of this beta is to present to you, our community, ahead of time, some of the balance changes we are thinking about, give the opportunity to test it in practice, see how it feels, give us feedback in return, which we can then use for further
Warships of the Pacific - Hotfix, 1.17.5.12026-03-19Admirals! Here’s a small hotfix for Warships of the Pacific, 1.17.5.1. Patch Notes: Bugfix Fixed incorrect ordering of some infantry models which caused some nations to display the generic 3D model Fixed an issue where the M24 Chaffee (USA) model shows up first in the list for Great War tanks if you have NSB disabled