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
La Résistance - Showing off the French Focus Tree(s) Part 2
Tune in to twitch.tv/paradoxinteractive on Wednesday @16:00CET for part 2 of our in-depth look on what is coming for France in our upcoming expansion: La Résistance. If you missed missed part 1, or any other previous st…
- Hearts of Iron IV
Dev Diary: Intelligence
Today's Development Diary by Podcat Hi everyone! Next to last dev diary before christmas, and today we are going to talk about intel. We have been talking about ways to get intel a bit in previous diaries, like code cra…
- Hearts of Iron IV
Preview Stream: France Rework
Make sure you tune in to our second preview stream for La Resistance, which will be focusing on the rework of France's National Focus Tree. Live at 16:00 CET here: https://twitch.tv/paradoxinteractive
- Hearts of Iron IV
Dev Diary: Recon Planes and Code Cracking
Today's Development Diary by Podcat Hi everyone! Today we are going to start talking about changes to Intel and present some of the tools you will have at your disposal for gaining it in La Résistance. We will also go b…
- Hearts of Iron IV
Updated Garrison and Resistance Mechanics - twitch.tv/paradoxinteractive
At long last we're back with streams! Every Wednesday at 16:00CET we'll showcase our upcoming expansion: La Résistance for you. Tune in to twitch, or you can watch it later on our Grand Strategy Youtube Channel!
- Hearts of Iron IV
Dev Diary: Collaboration and Coups
Today's Development Diary By Podcat Hi guys! Today we are going to be talking about collaboration, compliance and also coups as we missed covering them in last weeks dev diary about operations. Coups Lets start off with…
- Hearts of Iron IV
Dev Diary: Operations
Today's Development Diary by Podcat Welcome to another dev diary for La Resistance. Today we are back talking espionage, namely Operations. These are like big impact missions that may require multiple agents as well as…
- Hearts of Iron IV
Launcher Hotfix 1.8.1 LIVE
Hotfix has arrived. 1.8.1 "Fork" is now live and downloadable through Steam. Checksum is aa59. This hotfix consists of a couple quick display setting fixes and a fix for the Paradox Account login popup that should not h…
- Hearts of Iron IV
The 1.8 "Fork" Update is now LIVE!
1.8.0 "Fork" is now live and downloadable through Steam. The last four digits of the checksum are 3241 (the new launcher displays a much longer full checksum; the in-game version will still show just the four digits). S…
- Hearts of Iron IV
Dev Diary: Sub Balance + New Launcher
Today's Development Diary by Podcat As Wednesday is upon us so is a new dev diary! Next week we will be back with more espionage, but today is about a small surprise patch as well as improved Focus tree navigation. 1.8…
- Hearts of Iron IV
New Launcher on November 13th
We are presenting you with a new startup menu (or launcher some call it) for Hearts of Iron IV. The reason for doing this is to create a base on which we can continue to develop features and enrich your experience in ma…
- Hearts of Iron IV
Dev Diary: The Intelligence Agency
Hi everyone! Today we will start going through the Espionage features announced at PDXCON in greater detail. First off is the hub of everything - Your Intelligence Agency. The Agency The Agency is something you need to…
- Hearts of Iron IV
Dev Diary: Back from PDXCON!
Read today's Dev Diary by Podcat Hi everyone! We are now back from PdxCon (most of us) and landing in our new offices, so brace for a ton of pictures! Oh and we announced the new expansion! If you haven't see the traile…
- Hearts of Iron IV
Stream: World War PDXCON
Tune in to The Paradox Twitch Channel at 17:00CEST tonight to watch some prominent streamers clash in a World War in a 4+ Hour Streaming Session - LIVE from PDXCON 2019 in Berlin! Each team will be manned with one devel…
- Hearts of Iron IV
Hearts of Iron IV: La Résistance Announced
BERLIN - 19 October 2019 - The quickest way to kill an enemy is to do it from within. Learn its secrets. Sabotage its industry. break its codes. Strike at vulnerable points behind the front lines. Send agents to build a…
- Hearts of Iron IV
Dev Diary: PDXCON and Office Move!
Today's Dev Diary by Podcat Hi everyone! Today will be a short dev diary because we are preparing for PdxCon and also moving office at the same time. Its not chaotic at all :D PdxCon this year is in Berlin, and there is…

