GET YOUR BEARINGS
About Hearts of Iron IV
Hearts of Iron IV is a grand‑strategy wargame that puts you in command of a nation during World War II. You must balance industry, diplomacy and military planning to out‑maneuver ideological foes. The game’s depth lets every decision reshape history, from the timing of attacks to the political system you install. Four expansions broaden the experience, adding regional focuses and naval alternatives, while full cross‑platform multiplayer lets you cooperate or compete with others.
01 / THE GUIDE
Grand Strategy Core
The core loop challenges strategic and political insight, asking you to guide a nation through the darkest hour of humanity. You build industrial capacity, forge alliances and wage war on ideological opponents. The system tracks almost every aspect of the conflict, offering a comprehensive simulation.
Every decision can open alternate historical paths, from small tactical choices to sweeping political reforms. This flexibility means the game can diverge dramatically from real‑world outcomes, rewarding careful planning.
- Map out long‑term political goals before expanding your industry.
- Balance diplomatic actions with military preparation to avoid overextension.
02 / THE GUIDE
Nation Management
Players must develop an industrial powerhouse and diplomatic network to support wartime efforts. Building factories, managing resources and forming alliances are essential to sustain prolonged conflict.
Political objectives can range from re‑establishing democracies to reviving forgotten monarchies, allowing diverse governance styles that affect both internal stability and external relations.
- Prioritize resource‑rich territories early for steady production.
- Use diplomatic ties to secure trade routes and raw materials.

03 / THE GUIDE
Military Planning
The game lets you design division templates, research production methods and set factory instructions. Detailed planning reaches down to individual equipment choices, shaping combat effectiveness.
Strategic objectives include where to launch attacks, such as cracking open Fortress Europe, and managing the logistics that keep armies supplied.
- Create balanced division templates that match your nation's technology level.
- Research production upgrades before launching major offensives.
04 / THE GUIDE
Expansion Packs
Four expansions accompany the base game, each adding regional depth. Death or Dishonor focuses on Eastern and Central European middle powers, while Together for Victory expands British Commonwealth nations.
Waking the Tiger covers China and Japan, and Man the Guns introduces naval features and alternate United States histories, broadening strategic options.
- Start with the expansion that matches your preferred region for focused learning.
- Combine naval and land expansions to explore joint operations.
05 / THE GUIDE
Platform & Multiplayer Features
Hearts of Iron IV runs on Windows, macOS and Linux, supporting cross‑platform multiplayer. Players can join co‑op or competitive sessions, using Steam services such as achievements and cloud saves.
Additional Steam features include trading cards, workshop mod support, remote play on tablet and family sharing, ensuring flexible access across devices.
- Enable Steam Cloud to keep progress synced across machines.
- Use Remote Play on Tablet for quick strategy checks while away from PC.





COMMUNITY
Player discussion