Hearts of Iron IV

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Hearts of Iron IV

Hearts of Iron IV (or HOI4) is an upcoming grand strategy game by Paradox Interactive and the sequel to Hearts of Iron III. It covers the time period from 1936 to 1948, focusing on the build up to the Second World War and the war itself.

Hearts of Iron IV was announced on the Paradox Forums on the 23rd of January 2014. As of October 2015, the developers were seeking new beta testers for the closed beta. Released is expected in late Q1 or Q2 2016.

Announced features

  • Total strategic war
The war is not only won on land, on the seas and in the air, but also in the laboratories, the factories, the backrooms, in international trade and in the hearts and minds of men and women.
  • The most authentic real-time simulation of the war
Let the greatest commanders of WW2 fight your war with the tools of the time; tanks, planes, ships, guns and newly discovered weapons of mass destruction.
  • Fight as any nation in the greatest human conflict of all time
Choose from the greatest powers striving for victory, or the small nations trying to weather the storm.

Development team

The game is being developed by a core team of six, augmented by drop-in support from the rest of Paradox Development Studios.

Developer diaries

Developer Diaries are articles, often accompanied by videos, published by Paradox to describe the game design in detail. HOI4 diaries are planned for release monthly, later quickening in pace as release date approaches.[1]

The automatically updated list for these diaries is here.

No. Title and Link Description Date
1 Our Vision Design goals 7 February 2014
2 The Tools of War Equipment, production and research of 7 March 2014
3 Bringing WWII to the mainstream Dogs! 1 April 2014
4 Land Doctrines Doctrine paths 11 April 2014
5 Production Lines How things get built. 9 May 2014
6 Division Design Division planner, division template 13 June 2014
7 Air Combat Air war 11 July 2014
8 Experience and Variants Production 8 August 2014
9 Vacation and Air tech Air technology tree 12 September 2014
10 Naval Combat Naval gameplay 10 October 2014
11 Map & Graphics Visual aesthetics of the game 7 November 2014
12 Internal Politics Internal affairs of a country 16 January 2015
13 Conscription & Training Manpower, recruitment, training 20 February 2015
14 National Focuses National focuses 20 March 2015
15 On the high seas Naval battles 11 April 2015
16 World Tension World tension, war justifications 8 May 2015
17 Johan Invades Germany Barely a dev diary 12 June 2015
18 Army Planner Creating and deploying units 26 June 2015
19 Equipment How equipment works 3 July 2015
20 Soviet Union and Communism Soviet Union and Communism 14 August 2015
21 Land Combat Land combat mechanics 21 August 2015
22 Support Companies List of support companies 28 August 2015
23 Industrial Capacity How factories function 4 September 2015
24 Trade and Resources Overview of international trading 11 September 2015
25 Laws and Politics How to manage government 18 September 2015
26 The Navy Naval doctrines and naval technology 25 September 2015
27 Italy Italy's situation in the game 2 October 2015
28 Weather & Terrain How weather and terrain function 9 October 2015
29 Factions & Wargoals How factions and wargoals function 16 October 2015
30 France Overview of France 23 October 2015
31 Peace Conferences Ending wars 30 October 2015
32 The USA Overview of USA 6 November 2015
33 Supply The supply system and supply areas. 13 November 2015
34 Civil Wars Civil Wars and Coups. 20 November 2015
35 Germany Overview of Germany 27 November 2015
36 Helping out in other wars Helping out in other countries wars without directly getting involved 4 December 2015
37 Carrier Warfare How aircraft carriers work. 11 December 2015
38 Submarines How submarines work. 18 December 2015
39 The Radio Radios, reinforce chance and radar stations. 8 January 2016
40 Changes to the game Completely revised factory slots mechanic, World Tension.. 15 January 2016
41 Order of Command OOC and Commander traits 22 January 2016
42 Japan Overview of Japan 29 January 2016
43 Diplomacy and other options Diplomacy, Factions, War Goals, … also: HOI4 is now in BETA 05 February 2016
44 Occupation and Resistance Managing occupied territory 12 February 2016
45 Battle Plans How battle plans work 19 February 2016
46 United Kingdom Overview of UK 26 February 2016
47 China Overview of China 4 March 2016

References