Free games like Hearts of Iron IV
Below are 9 free-to-play Steam games similar to Hearts of Iron IV, ranked by player overlap and content similarity. No purchase or Steam login required to view the list. Every pick is a full free-to-play title — not a demo, trial, or time-limited giveaway. imho.run's catalogue refreshes daily, so newly free or newly popular titles surface here without manual editing.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like Hearts of Iron IV page.
Ranked picks
- 1

Ultimate Custom Night
Free-to-play alternative to Hearts of Iron IV — no purchase or trial window.
Welcome to the ultimate FNAF mashup, featuring 50 selectable characters and custom difficulties!
- 2

Bongo Cat
Free-to-play alternative to Hearts of Iron IV — no purchase or trial window. Shares Simulation with Hearts of Iron IV.
Bongo cat needs your help. Bongo cat needz more hatz!!! Every time you press a key, Bongo cat will punch your taskbar. Type, click, play, work to collect more points. Which hats will you find?
- 3

Counter-Strike:Global Offensive
Free-to-play alternative to Hearts of Iron IV — no purchase or trial window.
Counter-Strike:Global Offensive (CS:GO) expands upon the team-based action gameplay that it pioneered when it was launched over 2 decades ago. CS:GO features new maps, characters, weapons, and game modes, and delivers updated versions of the classic CS content (de_dust2, etc.).
- 4

The Expendabros
Free-to-play alternative to Hearts of Iron IV — no purchase or trial window.
The Expendabros have assembled and set their sights on the forces of ruthless arms dealer Conrad Stonebanks in the forests of Eastern Europe.
- 5

The Lab
Free-to-play alternative to Hearts of Iron IV — no purchase or trial window.
Welcome to The Lab, a compilation of Valve’s room-scale VR experiments set in a pocket universe within Aperture Science. Fix a robot, defend a castle, adopt a mechanical dog, and more. Still not sold? It’s free!
- 6

DORONKO WANKO
Free-to-play alternative to Hearts of Iron IV — no purchase or trial window. Shares Simulation with Hearts of Iron IV.
『DORONKO WANKO』 is a DORONKO Action Game. In this game, You can become a cute, innocent Pomeranian, make your master's home messy and dirty. "Will the master be angry with me?" Don't worry. Because you are a sweet doggie.
- 7

Landfall Archives
Free-to-play alternative to Hearts of Iron IV — no purchase or trial window. Shares Strategy with Hearts of Iron IV.
Break into the Landfall Archives to steal and play previously unreleased games, demos, interactive slide shows, and even an unreleased version of Totally Accurate Battle Simulator from 2017!
- 8

SuchArt: Creative Space
Free-to-play alternative to Hearts of Iron IV — no purchase or trial window. Shares Simulation with Hearts of Iron IV.
Paint on any surfaces with numerous tools in Creative Space — a free sandbox version of SuchArt: Genius Artist Simulator. Create masterpieces, complete commissions, and decorate your studio in the most advanced artist sim!
- 9

Supremacy: Call of War 1942
Free-to-play alternative to Hearts of Iron IV — no purchase or trial window. Shares Strategy and Simulation with Hearts of Iron IV.
Take over the control of one of the mighty nations during the times of World War 2 in this persisting long-term strategy game. Conquer provinces, forge alliances and build up your economy in real-time. Research top secret weapons of World War 2 and become the one true superpower!