Free games like Arma 3
Below are 8 free-to-play Steam games similar to Arma 3, 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 Arma 3 page.
Ranked picks
- 1

DCS World Steam Edition
Free-to-play alternative to Arma 3 — no purchase or trial window. Shares Simulation with Arma 3.
Feel the excitement of flying the Su-25T "Frogfoot" attack jet and the TF-51D "Mustang" in the free-to-play Digital Combat Simulator World!
- 2

PlanetSide 2
Free-to-play alternative to Arma 3 — no purchase or trial window. Shares Action with Arma 3.
PlanetSide 2 is an all-out planetary war, where thousands of players battle as one across enormous continents. Utilize infantry, ground and air vehicles, and teamwork to destroy your enemies in this revolutionary first-person shooter on a massive scale.
- 3

Age of Empires III: Definitive Edition
Free-to-play alternative to Arma 3 — no purchase or trial window. Shares Strategy with Arma 3.
Age of Empires III: Definitive Edition offers players a trial of this historical single & multiplayer RTS experience. *Note: To unlock all features of the game please see the “Base Game” product.
- 4

Tom Clancy's Rainbow Six Siege
Free-to-play alternative to Arma 3 — no purchase or trial window. Shares Action with Arma 3.
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.
- 5

Counter-Strike 2
Free-to-play alternative to Arma 3 — no purchase or trial window. Shares Action with Arma 3.
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

Combat Master: Season 5
Free-to-play alternative to Arma 3 — no purchase or trial window. Shares Action with Arma 3.
Join fast-paced action-packed combat. Play Combat Master -- AAA experience on any hardware. Best-in-class multiplayer gunfight. Next-level extreme performance. Lightning-speed loading time and a whole lot more.
- 7

Talvisota - Winter War
Free-to-play alternative to Arma 3 — no purchase or trial window. Shares Action and Simulation with Arma 3.
Talvisota for Rising Storm 2 brings players from the steaming jungles of Vietnam to the frozen forests of Finland, during the Soviet-Finnish Winter War of the late 1930s.
- 8

War Selection
Free-to-play alternative to Arma 3 — no purchase or trial window. Shares Strategy with Arma 3.
War Selection is a compelling RTS game featuring base building, resource extraction and warfare. Evolve from a stone age tribe to a distinct industrial nation with unique game mechanics and battle for supremacy with dozens of players on a unique procedurally generated map.