Hearts of Iron 4 Wiki

Important pages

State Affairs

Diplomacy Puppets World tension

Government Laws & Advisors

National focus Research

Construction Production Trade

Warfare

Terrain

Land war Naval war Air war

Land units Naval units Air units

About this game

Hearts of Iron IV is the sequel to Paradox Development Studio's game Hearts of Iron 3. It covers the time period from 1936 to 1948, focusing on the buildup to the Second World War and the war itself. This Hearts of Iron 4 Wiki is intended as a repository of Hearts of Iron 4 related knowledge, useful for both new and experienced players as well as for modders.

Want to help improve the wiki?

Anyone can contribute to the wiki. If you want to become a contributor please register (though you can also edit anonymously), and check out the work needed page. If you spot anything in need of improvement, don't hesitate to make an edit. If you plan on making any major changes it is recommended you read the style guidelines first. To help with the translations see the information on the translations page.

Latest news

Game history

2019-02-28 - Man the Guns to be released (alongside patch 1.6)
2018-06-27 - Patch 1.5.4 released
2018-03-08 - Patch 1.5 released (alongside Waking the Tiger)
2017-06-14 - Patch 1.4 released (alongside Death or Dishonor)
2016-12-15 - Patch 1.3 released (alongside Together for Victory)
2016-09-16 - Patch 1.2 released
2016-06-30 - Patch 1.1 released
2016-06-06 - Hearts of Iron IV released

Video Diaries

2018-05-20 - PDXCon 2018 - News from the Front
2018-02-09 - Hearts of Iron IV - Patch 1.5 "Cornflakes"
2018-02-07 - Waking the Tiger #3 - Chain of Command
2016-05-30 - Hearts of Iron IV - Beginner tutorials

Developer Diaries

2019-02-13 - Dev diary #30 - AI Plans posted
2019-02-06 - Dev diary #29 - Achievements posted
2019-01-30 - Dev diary #28 - The Imperial Japanese Navy (AAR) posted
2019-01-23 - Dev diary #27 - Art and Music posted
2019-01-16 - Dev diary #26 - Tech Changes posted
2019-01-09 - Dev diary #25 - Fuel Review and Motorized Artillery posted
2018-12-12 - Dev diary #24 - Subs and Convoy Raiding posted
2018-12-06 - Dev diary #23 - New Naval Combat posted
2018-11-28 - Dev diary #22 - Bag of Tricks #3 posted
2018-11-21 - Dev diary #21 - Naval Rework #1 posted
2018-11-14 - Dev diary #20 - Naval Treaties and Ship Refits posted
2018-11-07 - Dev diary #19 - Ship Designer posted
2018-10-31 - Dev diary #18 - Bag of Tricks #2 posted