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.
- 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.
The game is being developed by a core team of six, augmented by drop-in support from the rest of Paradox Development Studios.
- Podcat (lead/design/programming)
- Darkrenown (script/research/design)
- TomaszKowalczyk (programmer)
- Guraan (programmer)
- Sideburnout (2D art)
- larre (3D art/map)
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.
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|