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
Road to PDXCON: Grand Campaign - Hearts of Iron [7th May 12:00 CEST]
Join the Hearts of Iron team, The Grand Campaign cast and our Discord senate for the third leg of our story! The story has unfolded and the Dual Monarchy stands at the precipice of a World War. In this modded, community…
- Hearts of Iron IV
Dev Diary: Combat & Stat Changes
Hi everyone and welcome back to another dev diary! Today is about various changes that affect combat and units. With the Barbarossa update we want to shake up the meta a bit and also change a few stats and other aspects…
- Hearts of Iron IV
Dev Diary: Tank Designer
Hello, and welcome back to another DevDiary about content coming in the 1.11 “Barbarossa” patch and its accompanying DLC. As always, keep in mind that the things shown in this DevDiary are still under development, so th…
- Hearts of Iron IV
Dev Diary: Poland Focus Tree Rework | Part 2/2
Hello folks and welcome back to the Poland dev-diary extravaganza! This week, I am going to continue covering the changes coming to Poland in 1.11 Barbarossa and the unannounced DLC.Today we’ll be covering the DLC conte…
- Hearts of Iron IV
Dev Diary: Poland Focus Tree Rework | Part 1/2
Hello everybody and welcome to another dev diary for the upcoming Barbarossa patch and yet to be announced DLC. Today I’m going to be talking about the first focus tree which is a rework of Poland. Poland was first adde…
- Hearts of Iron IV
Road to PDXCON: Grand Campaign
The journey to PDXCON begins: Introducing the Grand Campaign! 4 games, 4 weeks and 5 days of play! Join the teams of Crusader Kings III, Europa Universalis IV, Hearts of Iron IV and Stellaris for the largest event this…
- Hearts of Iron IV
Dev Diary: Supply - A First Look
(Reposted from yesterday due to an error) Hi everyone and welcome back to regular weekly dev diaries (if you don't count the april fools one last week). I know you are all super excited to hear what we have been up to s…
- Hearts of Iron IV
Dev Diary | HEARTS OF MALTA!
Malta focus tree Hello everyone! So this is a first for me, my brand own dev diary! Well... in fact, I am in a bit of an odd situation. I fell asleep one day in the office about a year ago and no one came in the next mo…
- Hearts of Iron IV
Livestream: An Introduction to Germany - 1330 CET Wednesday!
Join Community Manager Josh in our latest weekly stream series! Whether you're a novice or a returning player, this could be the perfect series for you! In this series we'll explain how to play Germany in single player,…
- Hearts of Iron IV
Midweek Madness: Free to Play + Deep Discounts!
Midweek Madness is upon us! Along with this week's Multiplayer Event, we've got a variety of deals and discounts for you to sink your teeth into. First up, Battle for the Bosporus is on sale for the very first time! We'…
- Hearts of Iron IV
Masters of the Mediterranean - Multiplayer Event 10 + 11 March
Rome. Egypt. Byzantium. The Mediterranean has known many masters. Now the great powers of the atomic age look to seize this jewel for themselves. Join the Hearts of Iron team for a multiplayer clash over who can call th…
- Hearts of Iron IV
Live Stream: I Swear I'm Not a Byzantophile!
Join us once again on Wednesday for another episode of 'I Swear I'm Not a Byzantophile!' Having overrun Romania but, inadvertently given parts of Greece to Bulgaria, Josh and Daniel will be looking to take the fight to…
- Hearts of Iron IV
Patch 1.10.4 - Multiplayer Security Fix
Hello everyone, Patch 1.10.4 of the "Collie" update is now live and should be downloading through Steam and Microsoft Store as we speak. The new checksum is 8878. This update aims to resolve various security issues repo…
- Hearts of Iron IV
Live Stream: I Swear I'm Not A Byzantophile
It's 2021 and we're back with a new weekly stream series! Kicking things off in the new year is a playthrough as Greece, for the 'I Swear I'm Not a Byzantophile' achievement. We'll be playing as Greece, reviving the Byz…
- Hearts of Iron IV
Dev Diary: New Year Update
Today's Dev Diary by Podcat 2021? Damn, we are in the future now boys and girls! I wanted to write this diary because it feels like it's been a really long time since we chatted. Well I guess it wasn’t that long actuall…
- Hearts of Iron IV
Hearts of Iron IV + World of Warships Bundle!
Hello everyone! This weekend, from today until the 22nd of December, we've created a bundle along with our friends over at World of Warships! The bundle includes: World of Warships (free-to-play) World of Warships — Exc…
