Free games like Darkest Hour: A Hearts of Iron Game
Below are 8 free-to-play Steam games similar to Darkest Hour: A Hearts of Iron Game, 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 Darkest Hour: A Hearts of Iron Game page.
Ranked picks
- 1

The Lab
Free-to-play alternative to Darkest Hour: A Hearts of Iron Game — 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!
- 2

Landfall Archives
Free-to-play alternative to Darkest Hour: A Hearts of Iron Game — no purchase or trial window. Shares Strategy with Darkest Hour: A Hearts of Iron Game.
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!
- 3

SuchArt: Creative Space
Free-to-play alternative to Darkest Hour: A Hearts of Iron Game — no purchase or trial window.
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!
- 4

Jigsaw Puzzle Dreams
Free-to-play alternative to Darkest Hour: A Hearts of Iron Game — no purchase or trial window.
Beautiful Multiplayer Jigsaw Puzzle game where you can design the room you play in!
- 5

Counter-Strike 2
Free-to-play alternative to Darkest Hour: A Hearts of Iron Game — no purchase or trial window.
For over two decades, Counter-Strike has offered an elite competitive experience, one shaped by millions of players from across the globe. And now the next chapter in the CS story is about to begin. This is Counter-Strike 2.
- 6

Dota 2
Free-to-play alternative to Darkest Hour: A Hearts of Iron Game — no purchase or trial window. Shares Strategy with Darkest Hour: A Hearts of Iron Game.
Every day, millions of players worldwide enter battle as one of over a hundred Dota heroes. And no matter if it's their 10th hour of play or 1,000th, there's always something new to discover. With regular updates that ensure a constant evolution of gameplay, features, and heroes, Dota 2 has taken on a life of its own.
- 7

Tom Clancy's Rainbow Six Siege
Free-to-play alternative to Darkest Hour: A Hearts of Iron Game — no purchase or trial window.
Rainbow Six® Siege is the reference in tactical team shooters, where elite strategy and execution triumph. Enjoy free access to Quick Match, Unranked, and Dual Front game modes with a selection of operators.
- 8

Rec Room
Free-to-play alternative to Darkest Hour: A Hearts of Iron Game — no purchase or trial window.
Rec Room is the best place to build and play games together. Party up with friends from all around the world to chat, hang out, explore MILLIONS of player-created rooms, or build something new and amazing to share with us all.