News

Industrial Parks Could Make Hearts of Iron IV’s Factory Map Matter More

The proposed Military Industrial Park and Shipyard Industrial Park variants would let local state bonuses affect factory growth, production efficiency, and resource costs.

0 13 2 minutes read

Hearts of Iron IV production interface showing an Industrial Parks section and a Morane-Saulnier selection for a military production park.

Industrial Parks are the main idea behind Hearts of Iron IV’s latest look at military production. In a September 8 Dev Corner, game designer Zwirbaum outlined a work-in-progress system that would make the location of factories matter more without replacing the entire production model. The proposal is not a confirmed rework or a patch announcement, and every part of it remains subject to change.

The concept follows an earlier Military Production discussion about the current shared pool of factories. Industrial Parks would add more specialization to that system by grouping certain production capacity into dedicated complexes.

Military and Shipyard Parks Would Specialize Production

The proposed buildings come in two variants, a Military Industrial Park and a Shipyard Industrial Park. Each one would work with the state where it is built, gaining benefits from local conditions that could affect how quickly the park grows, how efficiently its factories operate, or how many resources its production lines consume.

Construction would be followed by a corporation selection. In the example shown by Zwirbaum, a Military Industrial Park in the Rhonne state could be assigned to Morane-Saulnier as a Light Aircraft Industrial Park. That setup would focus the park on light aircraft, including Fighters, Carrier Fighters, CAS, and Carrier CAS, while also reducing the aluminium cost tied to those lines in the example.

Industrial Park production lines would appear in their own subsection, and only factories assigned to that specific park could be placed on them. That would give players a more direct connection between a local industrial complex, its chosen corporation, and the equipment it produces.

The parks could also receive upgrades when they reach certain size levels. The current effects and values are placeholders, so the screenshots do not represent final balance. The same applies to the names and artwork, which are still being developed.

Cross-Industry Bonuses Are Still an Open Question

The next decision could reach beyond individual parks. The team is considering whether synergies should cross industrial branches, such as allowing an Artillery Industry park to affect Naval Industry or related capabilities. That direction is still being presented as a question for players rather than a confirmed feature.

For now, Industrial Parks remain an early design proposal with no patch or release date attached. Hearts of Iron IV players can share whether they prefer tightly focused industrial branches or wider connections between them in the comments, and follow us on X, Bluesky, YouTube, Instagram, Steam, and Telegram.

In the latest Steam Dev Corner, game designer Zwirbaum outlined a work-in-progress system that would make the location of factories matter more without replacing the entire production model.

Hearts of Iron is the first ever World War II PC game of true Grand Strategic scope. The game map spans the entire world and allows players to take part in any front they choose. You can play any nation in the world, but the game focuses on the epic struggle between the great alliances of the world orders - Fascism, Communism and Democracy.