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
Man the Guns available on February 28th 2019
STOCKHOLM - 07 February 2019 - The great democracies of the world face unprecedented challenges on their legitimacy. Fascists and Communists pressure freedom loving nations on every side. Will they hasten war against th…
- Hearts of Iron IV
Man the Guns Achievements!
Man the Guns is drawing ever closer (you will get the exact date very soon, we promise) and of course a new expansion means a number of new achievements! Click here to read the development diary by Bratyn Useful links H…
- Hearts of Iron IV
The Imperial Japanese Navy (AAR)
Archangel has been engaged in naval warfare playing a game against Niall. This week he will share his tale to give you a feel of the new Naval Warfare features of Man the Guns Click here to read the development diary by…
- Hearts of Iron IV
Tech Changes
This week we'll have a look at the new tech tree changes and how we tweaked the research time mechanics to make sure you are able to utilize all these new things Click here to read the development diary by Archangel85 U…
- Hearts of Iron IV
Fuel Review and Motorized Artillery
Welcome into 2019, let's kick things off with a look at the highly anticipated new fuel system and how that enables the possibility of motorized artillery Click here to read the latest DD from Archangel85 Useful links H…
- Hearts of Iron IV
Merry Christmas!
The year is nearing an end, and the team will take a short holiday with their families. But first, let's have a small recap of this year Click here to read the latest Dev Diary by podcat Useful links Hearts of Iron Wiki…
- Hearts of Iron IV
Subs and Convoy Raiding
Let me introduce you to our new Game Designer YaBoy_Bobby. And let YaBoy_Bobby introduce you to our improved submarine warfare and convoy raiding! Click here to read the latest Dev Diary by YaBoy_Bobby Useful links Hear…
- Hearts of Iron IV
New Naval Combat
One day late, we give you this week's development diary. Today podcat will take us through changes to Naval Combat coming in the free 1.6 Ironclad update accompanying our next expansion: Man the Guns Click here to read…
- Hearts of Iron IV
Bag of Tricks #3
Let's have an update on some of the things the HoI4 Content Design team has fixed or adjusted since showing off the new focus trees Click here to read the latest Dev Diary from Bratyn Useful links Hearts of Iron Wiki He…
- Hearts of Iron IV
Dev Diary - Naval Rework #1
Here is the first development diary in a series that will showcase the changes to the naval system. Today we will look at new mission types and changes to the naval interface! Click here to read the development diary by…
- Hearts of Iron IV
Naval Treaties and Ship Refits!
Welcome to another development diary for Man the Guns! Today we will look at Naval Treaties and Ship Refits! Click to read the full Dev Diary by Archangel85 Useful links Hearts of Iron Wiki Hearts of Iron Development Di…
- Hearts of Iron IV
Ship Designer
This week's Development Diary will have a look at one of podcats absolute favorite features from Man the Guns - Click here to read the development diary by podcat Click here to read the development diary by podcat Usefu…
- Hearts of Iron IV
Dev Diary - Mexico
New development diary! Today we will discuss Mexico! In Man the Guns, you will get the chance to reform this nation and turn it into a power strong enough to enter World War II. Click the image to read the development d…
- Hearts of Iron IV
HOI4 Dev Diary - Naval Changes #1 - Overview
Here is today's development diary! The first of a series covering changes to naval combat and naval gameplay. Click here to read the development diary by podcat Useful links Official Website Hearts of Iron Wiki Hearts o…
- Hearts of Iron IV
HOI4 Dev Diary - Naval Terrain
New development diary! The sea in HOI4 has previously generally been either “ocean” or “ocean in range of enemy land based aircraft”, and otherwise mattered little. That’s about to change! Click here to read the develop…
- Hearts of Iron IV
Amphibious Vehicles and Research
It is time for a new development diary! Today we will take a look at Amphibious Vehicles and Research Changes! Click here to read the full development diary by podcat! Useful links Official Website Hearts of Iron Wiki H…
