Hearts of Iron IV

Hearts of Iron IV

40,369 ratings
File Size
811.611 MB
Sep 24, 2018 @ 5:31am
Jun 30 @ 1:50pm
138 Change Notes ( view )

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In 1 collection by Kaiserdevs
The Official Kaiserreich Collection
18 items
Welcome to the world of Kaiserreich!

Current KR version: 1.1.4, released 30/06/2024
Current HOI4 version supported: Bolivar 1.14.7 (5a08)

"What if Germany had won World War 1?"

As 1936 dawns, the Weltkrieg's legacy lies heavy upon the shoulders of a new generation.

Germany stands astride the centre of the world, a power without peer, but about its feet lie enemies both old and new; from France's rising syndicalist Internationale, to the old Entente, to an unbroken Russia and an unrepentant rising sun. All the while Germany's vast reach has left it dangerously overstretched, its allies in Constantinople and Vienna have grown estranged, and across the Atlantic the American colossus falters. Seventeen years have passed since the end of the war, and few expect the new year to bring a turning point, but soon a single spark may be all it takes to light the powder keg anew...

The Kaiserreich 4 Team are proud to present the most popular alternate history mod for Hearts of Iron II, Darkest Hour, and Hearts of Iron IV! Originally conceived by Sarmatia in 2005, Kaiserreich has since developed into one of the most in-depth alternate history mods, with thousands of unique events, graphics, countries and even mechanics! Rewrite history (again), but this time in Hearts of Iron IV!

  • An immersive alternative history scenario
  • A completely new political system including party popularity and ministers
  • A reworked map with new states and provinces
  • Ten different ideologies
  • Tens of thousands of new events that offer a wide range of different possibilities
  • Hundreds of decisions both generic and nation specific
  • Over 100 focus trees including dynamic trees that change during the game
  • Coloured portraits for every country leader and military leader
  • Hundreds of companies and ministers for all countries
  • Custom UI giving more options and more information
  • Thousands of handmade GFX for ideas, focuses and more
  • Dozens of 3D models

  • Even more events, decisions and other content
  • Focus trees for every starting nation
  • Reworked and improved older trees

Having Trouble Loading the Mod?

Starting with HoI4 1.8, Paradox updated its official launcher, and unfortunately that's caused a lot of issues for mod users. If you're having trouble loading the mod, being told 'descriptor file missing' or that KR is out of date, chances are you need to troubleshoot your launcher. This is a good place to go for advice on what to do: https://kaiserreich.fandom.com/wiki/Troubleshooting_the_HOI4_Launcher

Bug Reporting

Kaiserreich for Hearts of Iron IV is still in early development so there will be bugs, please report any you find here: https://github.com/Kaiserreich/Kaiserreich-4-Bug-Reports/issues
Please don't report them anywhere else, it makes our lives much easier when all bug reports are in one place. Make sure to give as much detail as possible and to double check no-one has reported your issue already.

Official Submods

You can find all of our Kaiserreich submods, the offical music mods among them, in the Kaiserreich collection here: https://steamcommunity.com/workshop/filedetails/?id=1540696322

Our Wiki

More information such as an FAQ, progress reports on upcoming content, complete change notes, the full timeline and much more can be found on our wiki:

Our Discord

Want to meet KR fans just like yourself? Talk with the developers? Get the first word on new updates? Join our discord here: https://discord.gg/kaiserreich

Team Recruitment

We are always looking for talented testers, coders, artists, translators and more. If you would like to join the team and help create the next version of Kaiserreich, head to our discord and check out the #recruiting channel for more information.


Interested in Kaiserreich multiplayer? Kaiserreich Weekly hosts periodical multiplayer matches, check out their server if you wish to join them.
Kaiserreich Weekly Discord: https://discord.gg/kmPn4HM
Their multiplayer submod: https://steamcommunity.com/sharedfiles/filedetails/?id=2826971483

Why No Comments Here?

We used to permit comments on this Workshop page, yes, but we disabled them for two reasons: 1) because the KR developers rarely come here to respond to comments, and 2) because, even when we did, there's no way for users to know we've responded. Any comments or questions are best directed either to our Discord, Twitter, or Reddit (links above), where they'll be responded to much more quickly. Bugs or other issues can be reported on our GitHub (link in the Bug Reporting section, above). Thanks for your understanding.

Translation Submods

We support unofficial translation efforts in many languages. Help is always welcome for these teams and we would love to see others form too.

Traditional Chinese: https://steamcommunity.com/sharedfiles/filedetails/?id=2950107801
Simplified Chinese: https://steamcommunity.com/sharedfiles/filedetails/?id=2946487287
French: https://steamcommunity.com/sharedfiles/filedetails/?id=1804188708
German: https://steamcommunity.com/sharedfiles/filedetails/?id=2319740642
Japanese: https://steamcommunity.com/sharedfiles/filedetails/?id=1849164647
Korean: https://steamcommunity.com/sharedfiles/filedetails/?id=2824266705
Polish: https://steamcommunity.com/sharedfiles/filedetails/?id=1386559784
Russian: https://steamcommunity.com/sharedfiles/filedetails/?id=1151467921
Turkish: https://steamcommunity.com/sharedfiles/filedetails/?id=2489372631

If you’d like to join these teams, or set up a new team, see ‘Team Recruitment’ above.

The KR4 Team: Alpinia, Arvidus, Augenis, Blackfalcon501, Blackleaf, Carmain, Cazadorian, Chazem, Chiang Kai-shrek, Chiron29, Cody, DuoDex, El Daddy, falling_robin, Fedex, Flamefang, Gaboemi, Hamfast, hildagrim, Ido, Igor050301, JazzyHugh, Jeankedezeehond, Jonny BL, Kano, Kara-Diamant, katieluka, Kennedy, kergely, KFateweaver, Klyntar King, Krčo, lehmannmo, Luwofe, Matoro, McOmghall, MrMano, ~mw~ // miwaco., Pelmen, PPsyrius, Purple Jinjo, RagnoStrangeros, Remington, Rnk, Shiroe, Shōta, Sonny O’Cad, SuperGreenBeans, suzuha, The Alpha Dog, The Irredentista, The Italian Jojo, Vidyaország, VladimirLemon and Zimbabwe Salt Co.

Full credits, including former team members and other mods, can be found here[kaiserreich.fandom.com] as well as accessible in-game via the ‘credits’ main menu button.