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
Thunder at our Gates | Patch 1.19.2
Generals! Today marks the last pre-summer patch with fixes and tweaks to Thunder At Our Gates. After this the team will have limited presence in the office for the summer period. We know that this patch does not hit all…
Security175 changes5 numericFix - Hearts of Iron IV
Steam Summer Sale | Up to 80% Off!
Generals! ️ Summer is officially here and with it we bring you the latest Summer Sales, including unprecedented discounts. The Steam Summer Sale has started, with discounts up to 80%. Thunder at our Gates just released,…
Store2 changesMaps - Hearts of Iron IV
HOI IV | Open Beta Weekend (1.19.2)
Generals! We decided it would be best to run 1.19.2 as an Open Beta over the weekend to get some potential player input over the weekend. This will allow us to make any necessary fixes as well that might pop up as a res…
Security183 changes5 numericFix - Hearts of Iron IV
Hearts of Iron IV - Celebrate 10 Years With Us
Generals! It’s been a week since launch, and we are working on our usual post release support. 1.19.1 released yesterday, doing a first balance pass, as well as quite a few encountered issues. We are working on 1.19.2 t…
Announcement5 changesBalanceCompatibility - Hearts of Iron IV
Thunder at our Gates | Patch 1.19.1
Generals! Thanks for all of the feedback we’ve received over the last few days. We’re hard at work addressing as much of it as possible and plan to incorporate more into another patch that will happen later down the lin…
Security82 changes5 numericFix - Hearts of Iron IV
Hotfix 1.19.0.1
Generals! We’ve just released a small hotfix (1.19.0.1) to address two of the issues that we’re seeing right now. There was a particular crash related to the Spanish civil war kicking off into a four-way civil war and t…
Patch notes8 changesFixGameplay - Hearts of Iron IV
Thunder at our Gates - Available Now!
Generals! Thunder At Our Gates is officially out now! Jump into the thick of the South-East Asian rainforests and battle your way through to victory. Or if you prefer a more grainy environment, stick to the Australian c…
Store5 changesGameplay - Hearts of Iron IV
Thunder at our Gates | Patch Notes (1.19.0)
Generals! Tomorrow at 18:00 CEST we’ll be releasing Thunder at our Gates. It feels like only two months ago that we brought you Peace for our Time. Accompanying this release we’ll bring you Patch 1.19.0 and, just like t…
Security216 changes5 numericFix - Hearts of Iron IV
Thunder at our Gates | Art & Achievements
Greetings everyone and welcome to the Art’s Developer Diary for the upcoming DLC Thunder at our Gates! We are looking forward to showing you what we’ve been cooking up behind the scenes. We’ll be showing off a selection…
Store6 changesUI/audioGameplay - Hearts of Iron IV
Hearts of Iron IV Official Merch Store is now Live!
Generals! To celebrate the 10th Anniversary of Hearts of Iron IV, and based on your feedback from the community merch survey, we have partnered with PrintClever to bring you the official Hearts of Iron IV Merchandise St…
Store3 changesMaps - Hearts of Iron IV
Dev Diary | HOI IV-X Anniversary Update
Generals! The Decade A decade. It still feels strange to write. Hearts of Iron IV turns Ten this month, and somehow the most unbelievable number in our telemetry isn't the millions of techs researched or wars declared,…
Event173 changes70 numericFix - Hearts of Iron IV
Thunder at our Gates: Army HQs & Special Forces
If I were extremely funny, I’d start this off by typing something like “ G’day mates ”, but a simple “ hello gamers ” will have to suffice this time. Welcome to this dev diary, where I’ll take you through the new bigger…
Security26 changesGameplayUI/audio - Hearts of Iron IV
Developer Diary | Siam
Sawasdee khrap! Today we will go through the focus tree for Siam, today known as Thailand. Context Before the start of the game Siam had lost territory, mainly against the French but also against the English. Large port…
Event5 changesBalanceGameplay - Hearts of Iron IV
Developer Diary | The Republic of Indonesia and the National Revolution
Selamat siang to you all once more. This dev diary is once again brought to you by Pdx_lily, and this time I’ll be showing you all the revolution content for Indonesia. As per usual, everything here is still in developm…
Security21 changes1 numericMaps - Hearts of Iron IV
Developer Diary | The Dutch East Indies
Selamat siang, Sugeng sonten, Wilujeng sonten, Rahajeng sore, and Goedemiddag to you all! My name is Pdx_lily, and I will be your host for today’s dev diary about Indonesia, also known as the Dutch East Indies (do note…
Event18 changesUI/audioBalance - Hearts of Iron IV
HOI IV | Open Beta Update VI
Generals! Here is another Open Beta Update for our upcoming Anniversary Patch, including some bugfixes, balancing and more naval AI improvements. We recently posted a survey as a way to check the community pulse, and it…
Event29 changesFixCompatibility
