Hearts of Iron III

Hearts of Iron III

Paradox Development Studio · 2009 · Grand Strategy, Strategy, World War II, Historical, Simulation

PC
Mostly Positive76% · 4,94877Metacritic50playing now
Best price 77 Great deal
$1.71-85%
$11.47lowest tracked $1.49
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Trailers & screenshots

About Hearts of Iron III

✦ AI summary

Command any of 150+ nations through World War 2 from 1936 to 1948, managing military strategy, diplomacy, and industrial production across 10,000 hyper-detailed provinces. With historically accurate commanders, deep customization of divisions, naval and air combat systems, and unprecedented strategic freedom, it's the most intricate WW2 grand strategy ever created.

Hearts of Iron III lets you play the most engaging conflict in world history, World War 2, on all fronts as any country and through multiple different scenarios. Guide your nation to glory between 1936 and 1948 and wage war, conduct diplomacy and build your industry in the most detailed World War 2 game ever made.
Features:
  • Play as any nation from 1936 to 1948, more than 150 countries to choose from.
  • Control the oceans with aircraft carriers, submarines and battleships and use your air force to defend your skies, support your naval and ground forces, and to bomb your enemies
  • Thousands of historically accurate real-world military commanders and politicians.
  • Realistic military command AI with unprecedented levels of interaction
  • In-depth diplomatic and political system.
  • Historical accuracy combined with an unparalleled level of freedom of choice
  • More than 10,000 land provinces makes the game five times more detailed than HoI2 and the most detailed depiction of World War 2 ever made.
  • Customize your divisions in detail with more than 20 types of brigades
  • New economic system makes it possible to buy weapons from abroad.
  • Mobilization and reserves gives the option of surprise attacks, Blitzkrieg made real.
  • Government-in-exile makes it possible to continue to struggle from abroad with underground movements and uprisings against the oppressing power.
  • Strategic warfare system makes it more important to defend the skies and oceans against foreign attacks; leaving cities open to enemy bombing will now be devastating.
  • A completely new intelligence system, with several types of intelligence sources, makes it possible to get information about enemy reserves and troop movements.
  • Assign troops to "theatres" on the map to fight two-front wars more successfully.
  • The new AI system and more detailed map will allow for more strategic decisions.
  • Flexible technology system with hundreds of categories, where major powers get their own unique attributes.

DLC & expansions

🎁 Complete the collection

Base game + 6 of 18 DLC at today's best prices (some DLC unpriced).

$21.65
to own everything

What Steam players say

Recent verbatim reviews from Steam — separate from playze.io community reviews below.

Recommended Jun 23, 2026
TLDR: It's the ultimate logistics simulator for hardcore strategy purists, but the interface is dated and the engine stability is terrible on modern rigs. You will need to buy "Their Finest Hour" DLC to enable CPU multicore optimizations. I would also recommend downloading the 4GB LAA patch online to let the executable use more RAM. Hearts of Iron III is a great military RTS game based in WW2. You can play as any country and build an army and alliances to try to take over the world. It's a top down game with a lot of mechanics that creates a very large learning curve. Once you learn the basics however this game is a blast to play and runs very well on older hardware unlike it's successor. This game is very complex and I don't want to sugar coat it at all. If your looking for a game to pick up and play this isn't it. This game requires you to play a few matches to start to grasp concepts and what you are doing before you understand the basics to have a good play through. You need to research different equipments as well as politically manage your country and dealing with different ideology countries that don't like you. You also need to micro manage your army as you will need them …
4 found this helpful
Recommended Jun 20, 2026
idk what the ♥♥♥♥ im doing, 10/10
2 found this helpful
Not recommended Jul 3, 2026
This is the WORST game I have ever bought on Steam!
Recommended Jun 28, 2026
incredible
Recommended Jun 26, 2026
Great WW2 strategy experience with good grand tactical elements too. Its a bit old now so may not run
Recommended Jun 21, 2026
No English

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