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 Corner | Reinventing Faction Dynamics (Part 1)
Generals! Continuing from where we left off last week, we have another briefing from Command. Find a comfortable chair, settle in, and read on. Briefing: Reinventing Faction Dynamics (Part I) Written by: Wrongwraith Hey…
- Hearts of Iron IV
Hearts of Iron IV Anniversary week & Developer Corners!
Generals! Not only is our nine year anniversary happening today, but we've got a lot of content for you all to read through so make sure to continue reading. We've got Developer Corners starting up again, HOI4 Anniversa…
- Hearts of Iron IV
Operation Brainstorm | Prototype Vehicles Available Now!
Generals! Welcome to Operation Brainstorm - File .: 1.16.6 :. This is the release of the final part of Expansion Pass 1: Prototype Vehicles. All of these models were either blueprints or early prototypes that were creat…
- Hearts of Iron IV
Paradox Publisher Sale!
Generals! Following the announcement of Project Caesar Europa Universalis V, the Paradox Interactive Publisher Sale has begun with deals up to 70% off for Hearts of Iron! This sale runs from now until May 15th BASE GAME…
- Hearts of Iron IV
Revealing Project Caesar!
Generals! Paradox Interactive are proud to welcome another soldier on the frontlines: Europa Universalis V is now available for wishlisting. Almost five hundred years of history unfold before you in Europa Universalis V…
- Hearts of Iron IV
War Games Fest Reinforcements!
Generals! The Steam Wargames Fest is already upon us, though we are joining later than most we are reinforcing the front lines immediately with up to 70% off! Hold the line with some fantastic offers on DLCs, or perhaps…
- Hearts of Iron IV
Developer Diary | Prototype Vehicles Unit Pack
Generals! We have some good news! Prototype Vehicles are almost ready to roll out, so instead of releasing them in Q3 as initially announced, we will launch them in Q2! Yes, the Prototype vehicle pack will be dropping s…
- Hearts of Iron IV
Patch Notes & Developer Diary | Operation EAR
Hey! @AveeBee here to give you a rundown of what we’ve been up to recently. Since Graveyard of Empires released, we’ve been working hard to polish and refine the new content to make it more enjoyable. Some of this has t…
- Hearts of Iron IV
OPEN BETA | Patch 1.16.5 - UPDATED
Generals! For the next several days you’ll be able to test some things and give us all your feedback in this thread. You can play around, test and give feedback on anything you like, but our focus will be on these point…
- Hearts of Iron IV
User Research Survey! - [CLOSED]
Generals! Command has issued another survey from Research & Development in order to understand our battlefield a bit better, looking into what similar games you interact with, your different playstyles and preferences,…
- Hearts of Iron IV
Operation SHOULDER | War Effort Patch 1.16.3
Generals! We are back with our latest War Effort patch of the year, which contains a bunch of bugfixes, some balance changes, and tweaks to the game. But before we get to that, we have some words from @Wrongwraith Hi ev…
- Hearts of Iron IV
Studio Gold Update & Patch Notes for Operation Knee
Dear fans, Today's Patch for Operation Knee marks the second release in a series of updates that we are doing to improve the game. Next week we aim to release the War Effort patch, which as Arheo said previously will be…
- Hearts of Iron IV
The Shah Plushie | 48 Hours Left to grab your Own!
Generals! Your Shah-nce to order your very own Shah Platypus is almost gone - Only 48 Hours remain! As a wise man once said: " You're a Plushie, Shah-rry!" Grab your own here, or by clicking the image below~
- Hearts of Iron IV
Steam Spring Sale!
Generals! The Quartermasters over here on Steam have once again reorganized the railroads to ensure maximum efficiency, now extending Discounts on HOI over to the Spring Sale! It is the perfect time to grab something fo…
- Hearts of Iron IV
Patch Notes | Operation HEAD, Checksum 48b7
Hello everyone! As we mentioned not too long ago, we’ll be bringing you several patches over the coming weeks and months. Here is our first batch of patch notes. Operation HEAD, 1.16.1, Checksum 48b7 Balance Increased t…
Small Update / Patch Notes - Hearts of Iron IV
Update from the Developers
Greetings all, At the risk of stating the obvious, the release of Graveyard of Empires has not gone the way we wanted. Today, I want to post a mini-retrospective that explains some of what happened leading up to the rel…
