Hearts of Iron IV

Greetings, Generals, Admirals, and Air Chief Marshals! The Swedish summer has officially drawn to a close, having treated us to a remarkably generous five-week run. Development on the upcoming 1.19.3 patch was already underway beforehand, and our team has spent the past few weeks putting the final polish on it. While release dates are always...

Greetings and welcome to another edition of the Dev Corner! This is our dedicated space to showcase ongoing projects, share behind-the-scenes insights, and gather your valuable feedback on upcoming mechanics and features. If you’ve been closely following our recent trailers, teasers, and previous developer updates, you’ve likely pieced together that we are cooking up something...

Greetings, Commanders! I am Zwirbaum, Game Designer for Hearts of Iron IV, welcoming you to another provisional update in our ongoing Open Beta series. This week, we are deploying a fresh batch of experimental features, balance adjustments, and mechanical tweaks. Please bear in mind that these additions are actively being evaluated and may or may...

Greetings, everyone! In today’s Dev Corner, we delve into the pivotal economic dilemma confronting Romania during the turbulent 1930s. Like many contemporary states, Romania found itself torn between its deeply entrenched rural heritage and an urgent imperative to modernize. What sets the nation apart is the sheer magnitude of this divide: with over 70% of...

Welcome, commanders! We are Alex, Norrman, and Marijn211—community modders teaming up with Paradox Interactive to bring you an exclusive first look at the forthcoming overhaul for Romania! Because these designs are actively in development and subject to refinement, we are eager to hear your impressions and integrate your feedback early in the process. A couple...

Greetings, Commanders! I’m Pdxen, Tech Lead for Hearts of Iron, and I am thrilled to welcome you to the second installment of our Summer Open Beta. This time around, we are shifting our focus away from game balancing and diving into a major modernization of the game’s underlying technology stack. The computing landscape has shifted...

Greetings, everyone! Jamor here once again. I want to extend my sincere gratitude for the thoughtful, constructive feedback you shared in our previous Airborne Dev Corner. I am hoping to tap into the community’s collective brilliance and insights once more. Currently, unit progression in HOI is relatively standardized. Divisions across various nations gain experience at...

Greetings, everyone! Today marks the launch of a fresh series of Dev Corners, shifting our focus toward an ambitious project we have yet to explore. We are beginning with some preliminary questions regarding our core concepts. Subsequent updates will dive deeper into specific nations and content drafts, where we will eagerly seek your feedback. To...

Greetings, everyone! I’m Zwirbaum, a Game Designer for Hearts of Iron, and once again, it is my turn to step into the developer corner spotlight. Without further ado, let’s dive straight into today’s main topic: Military Production. True to form, I’ll kick things off with a touch of mystery and a few questions for you...

Greetings everyone. I’m Zwirbaum, a Game Designer here at the Hearts of Iron team. Deviating from my usual tradition of composing extensive manifestos, I’ve decided to keep things concise today. I’d like to pose a few targeted questions regarding the “Economy” facet of our gameplay loop. I am eager to hear your thoughts on the...