Full ReleasePC

Hearts of Iron IV

Paradox Development Studio · Strategy, Simulation

Overview

Victory is at your fingertips! Your ability to lead your nation is your supreme weapon, the strategy game Hearts of Iron IV lets you take command of any nation in World War II; the most engaging conflict in world history.

Take charge of history’s greatest war machines in Hearts of Iron IV, a grand strategy wargame that challenges your strategic abilities and political insight. Refight World War II at the head of nation from the time period, building up an industrial powerhouse and a diplomatic alliance that will effectively wage war on ideological opponents.

Hearts of Iron IV is more than a historical simulation. Alternate historical paths open up with almost every decision you make, from small ones such as where to launch your attack to crack open Fortress Europe, to large ones, such as whether to re-establish democracies or long forgotten monarchies.

In Hearts of Iron IV, you can plan the military strategy almost down to the rivets, as you design division templates for your armies, research new modes of production and means of destruction, set out factory instructions and pursue political objectives. Almost no part of the war goes untouched as you guide a nation of your choice through humanity’s darkest hour.

This purchase comes with the Hearts of Iron IV base game as well as four expansion packs:

Death or Dishonor: focuses on eastern and central European middle powers

Together for Victory: focuses on British Commonwealth nations

Waking the Tiger: focuses on China and Japan

Man the Guns: focuses on naval features and alternate history paths for the United States

From the game's Steam store page.

THE GAMEQ VERDICT5,521 reviews analyzed

What players are actually saying

1. Summary

Players describe Hearts of Iron IV as a WWII grand strategy sandbox deep enough that people with 1,000 hours or more still call themselves beginners, and some say nothing else does what it does. Restoring the Kaiser, forming Byzantium or conquering the world as Luxembourg are ordinary campaign stories. Reviewers praise the alternate-history freedom, the payoff of a well-planned encirclement, and a modding scene (Kaiserreich, The New Order, Road to 56, Old World Blues, Equestria at War, Millennium Dawn, The Fire Rises) that many credit with keeping the game alive for a decade. Much of the writing is affectionate self-mockery: nobody understands the navy, "the first 1000 hours is the tutorial", and the game has eaten their social lives.

DLC is the most common complaint. More than half of the reviews that raise it still recommend the game, and players with the most hours raise it far more often than newcomers do. They object to core mechanics (tank, plane and ship designers, spies, lend-lease, doctrine parity) sitting behind a paywall that totals $200 to $300, and long-time owners resent paying again for reworked regions they had already bought. Veterans have a second grievance that newcomers rarely raise: updates that overhaul core systems, break saves and mods, and pile on "complexity without depth". Long-standing AI, crash and late-game performance problems add to it. Newcomers mostly talk about the brutal learning curve and recommend the game anyway.

2. What keeps coming up

What players praise

An unmatched WWII sandbox with endless replayabilityHigh

Players praise the scale (any nation, full control of industry, research, logistics, politics and the war itself), the way early decisions ripple into 1941, and the satisfaction of a plan that finally works. Alternate-history freedom gets the most attention: reviews gleefully recount communist France, a Habsburg restoration, a fascist Britain or a 20-year world war that ended with Brazil as a superpower. History and WWII come up in 9% of substantive reviews, and some players credit the game with teaching them history and geography. "Infinite replayability" is a typical verdict, and several long reviews call it the best WWII strategy game on the market because nothing else attempts the same thing. Some veterans counter that the depth amounts to "complexity without depth": stacked modifiers and optimized templates in place of generalship.

The modding scene keeps the game aliveHigh

Mods come up in 11% of substantive reviews, rising to 15% among players with 1,000+ hours, and usually as praise. Kaiserreich and Kaiserredux, The Fire Rises, Old World Blues, Equestria at War, The New Order, Road to 56, Millennium Dawn and Black Ice are all named, and some players say a mod was why they bought the game ("buying this is just something you need to do to play Kaiserredux"). Some treat Road to 56 or other free overhauls as a substitute for paid DLC. Others say vanilla gets boring after a few campaigns and only mods keep them playing, and that major updates regularly break those mods (see the updates theme below).

"One more war" addictionMedium

About 7% of substantive reviews make some version of the same joke: the game ate their sleep, showers, grades or relationships, and they would do it again. Some players describe sessions of six to twelve hours once the game clicks, and some say they have kept coming back for years.

Runs on modest hardware and multiple platformsLow

A small but consistent set of players note it runs on old laptops, integrated graphics, Linux and Mac. They usually add the late-game slowdown covered below, and a couple of Mac users report crashes or Apple Silicon issues.

The soundtrackLow

A handful of reviews single out the music and the No Step Back soundtrack as a highlight.

Where players are split

The learning curve and the tutorialHigh

Difficulty comes up in 16% of substantive reviews, and newer players raise it more often: 23% of reviews from players under 50 hours mention it, against 11% among 1,000+ hour players. Most of these reviewers still recommend the game (84% positive). They treat the steep climb as the price of depth and advise newcomers to start as Italy or France, lean on YouTube guides, or get a friend to teach them. The disagreement is over whether the game does its share of the teaching. A vocal minority, including experienced strategy players and a self-described 46-year-old software developer, says the in-game tutorial is inadequate, tooltips do not explain what modifiers or focuses actually do, and they spent more time on external guides than playing. Some who quit in the first hours call it "too complicated" or simply write, "I've spent 2 hours trying to figure out how to play".

The navyMedium

"I still don't know how the navy works" is the community's signature joke, and the navy comes up in 10% of substantive reviews, from players at every level, including people with 2,000 to 4,000 hours. Mostly the joke is affectionate, but real criticism sits behind it. Naval combat and screening are poorly explained, later changes to naval invasions and supply range made invasions more tedious for some veterans, the ship designer adds bloat that cannot be switched off, and a few players skip the navy entirely. A minority insists it is easy once learned and find it the most interesting combat layer.

Focus trees, alt-history and historical accuracyMedium

Focus trees and outdated national content each come up in 3% of substantive reviews, and only about 55% of those reviews are positive. Players love branching paths and rich trees for Germany, the USSR or the Balkans. They complain that major Allied powers (the US, UK and France) still run on old, thin trees while niche nations receive fresh DLC, that many minor countries have only generic content without DLC, and that 70-day focuses can be cancelled by events or soft-lock a run. Players also disagree about what kind of game it should be: some want a serious WWII simulator and find the meme paths and absurd buffs unrealistic, while others see the alternate-history chaos as the whole point. Historical mode draws criticism when the AI fails to follow history at all.

MultiplayerLow

Several reviewers call playing with friends the best way to enjoy and learn the game. Public multiplayer gets a worse report: reviewers mention desyncs and checksum errors in later years of a campaign, lobbies that die when the host leaves, long "lobby simulator" setup times, and players who use cheats to crash lobbies. Only 57% of the reviews that discuss multiplayer are positive.

What frustrates players

The DLC model: price, paywalled mechanics and paying twiceHigh

DLC is raised in 16% of substantive reviews, only 58% of which are positive. It climbs from 6% of reviews under 50 hours to 23% of reviews from 1,000+ hour players. The complaints are specific. Basic features are locked behind expansions: tank design (No Step Back), plane design (By Blood Alone), espionage (La Résistance), lend-lease (Together for Victory), scorched earth, and, after No Compromise, No Surrender, the doctrine system, which some say left base-game players at a stat disadvantage against the AI. Players quote full-catalog totals of $200 to $325 against a $50 base game, note that some achievements require DLC, and describe the base game as "a demo" or "half a game". Long-time owners are especially bitter. When early DLC like Waking the Tiger was folded into the base game and the same region was later reworked in new paid content, they felt they had been charged twice with no discount or loyalty path. Several judge the newer expansions (Graveyard of Empires, Thunder at our Gates, Peace for Our Time, a second Romania pack) as low value or buggy, while No Step Back and Götterdämmerung are the ones called worth buying. Opinion on the subscription is split: some recommend it as the sensible way in, others see it as a step toward a pay-forever model. Reviewers advise buying on sale, picking DLC selectively, and using mods, and a few openly recommend piracy instead.

Updates that overhaul mechanics and add bloatMedium

Reviews about changing mechanics are mostly negative (40% positive) and far more common among veterans (10% of 1,000+ hour reviews versus 2% under 50 hours). The recurring charge is that each update and DLC cycle adds another system (MIOs, special projects, coal and energy, the doctrine rework, ship design, faction changes, altered world tension) without integrating it into older content, so the game becomes a pile of menus rather than a deeper war game. Some returning players say they barely recognize the game after a year away. The practical costs follow: saves from an older version will not load, ironman campaigns are lost, and major patches break the mods many players depend on, leaving a few rolling back to versions like 1.14 or 1.16 at the cost of losing current mods.

Crashes, lost saves and the launcherMedium

Crash and bug reports appear in 4% of substantive reviews (42% positive). Players describe crashes on launch or when loading saves after updates, crashes around 1944 or during specific events, freezes after the energy and coal update, and the Paradox launcher failing outright or requiring workarounds. Several describe losing hours of an ironman run to a crash or a version mismatch.

AI behaviorMedium

AI complaints appear in 3% of substantive reviews, only 38% of which are positive, and veterans raise them most (6% of 1,000+ hour reviews). The specifics repeat. Allied AI stacks dozens of divisions on one tile and starves them of supply, the enemy spams naval invasions on unguarded ports, the battle planner leaves gaps or ignores orders so everything has to be micromanaged, and historical mode breaks down (Japan attacking the Soviets early, Italy collapsing, Germany failing to take France). Peace conferences draw their own fury: minor AI allies grab territory they never fought for and leave border gore. Others note the AI never uses late-game tools, so long single-player campaigns feel stale once the player learns its patterns.

Late-game slowdownLow

About 3% of substantive reviews flag performance, almost always the same pattern: smooth until around 1941 to 1943, then a crawl as AI nations spam divisions. A few blame the engine's reliance on a single CPU core. A few players with high-end rigs report it too, and heavy mods make it worse.

Interface and quality-of-life gapsLow

A smaller set of reviews call the UI cluttered and opaque ("It feels like I'm sitting in the cockpit of an airplane"), and list concrete gaps: no key rebinding for camera panning, poor scaling on 4K and HiDPI screens, awkward windowed mode, autosave limits that require editing files, no way to recall volunteers, and a flood of simultaneous pop-ups that hide important events.

3. The player conversation

Game-focused sentiment held steady through the period: every week from late June to mid-September 2026 landed between 84% and 90% positive, even as the Steam Summer Sale and a free weekend brought a large wave of newcomers in late June and early July. Many reviews are one-liners and memes about the navy, the endless tutorial, the lost social life, and the United Kingdom guaranteeing everyone.

Newcomers and veterans write about different things. Newcomers talk about the learning cliff and then recommend the game anyway. Veterans write about DLC, reworked mechanics, the AI and broken saves, and some older reviews carry later edits about DLC prices, mechanic reworks or saves that stopped loading. The practical advice is the same from both groups: buy on sale, get mods, and be careful with DLC.

4. What the developers could do

Move core mechanics out of paid DLC and keep paid content for national flavor. DLC is the most common complaint, and reviewers specifically single out equipment designers, espionage, lend-lease and doctrine parity as systems that should belong to every player.
Stop breaking saves and mods with each update, and let players opt out of new systems. Veterans' negative reviews cite lost ironman campaigns, version-locked saves, broken mods and bolted-on mechanics like the ship designer that cannot be disabled.
Rebuild the tutorial and explain the numbers in-game. The learning curve is raised in 16% of substantive reviews, with newcomers saying they needed hours of YouTube guides to cover the navy, supply and division design that the tutorial skips.
Fix crash, launcher and save-loading reliability. Players report crashes after updates, a launcher that fails to start the game, and saves that will not load, and some lose long ironman runs to them.
Improve the AI's front management, naval invasion logic and peace conference behavior. Reviews that raise the AI are among the least positive in the corpus, and they focus on allies starving their own divisions, invasion spam and minor allies taking territory they never fought for.
Give long-time owners credit when DLC is folded into the base game or a region is reworked. Players who bought Waking the Tiger and similar packs describe paying twice for the same countries as the moment they stopped buying.
Refresh the major Allied focus trees before adding more niche nations. Reviewers contrast the aging US, UK and France content with new paid packs for minor countries.
Tackle late-game slowdown from division spam and single-core processing. Players report the game crawling after 1941 to 1943, which makes finishing a campaign a chore.