Free games like Cossacks 3
Below are 8 free-to-play Steam games similar to Cossacks 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 Cossacks 3 page.
Ranked picks
- 1
Age of Empires III: Definitive Edition
Free-to-play alternative to Cossacks 3 — no purchase or trial window. Shares Strategy with Cossacks 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.
- 2
War Selection
Free-to-play alternative to Cossacks 3 — no purchase or trial window. Shares Strategy with Cossacks 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.
- 3
Empires Mod
Free-to-play alternative to Cossacks 3 — no purchase or trial window. Shares Action and Strategy with Cossacks 3.
Unique strategy/first person shooter mix: One commander on each team plays from above, choosing research, placing buildings and giving orders. The rest fill the role of soldiers on the ground, with four distinct classes to choose from and customizable vehicles to drive.
- 4
Zero-K
Free-to-play alternative to Cossacks 3 — no purchase or trial window. Shares Strategy with Cossacks 3.
With 100+ truly unique units, Zero-K is an RTS of freedom and creativity, tempered by a decade of refinement. Sculpt land into a castle and throw invaders off it with a Jugglenaut. Explore a massive campaign, solo or co-op. Hop online for epic 32 player battles or fast paced 1v1, on 100s of maps.
- 5
Galaxy Life
Free-to-play alternative to Cossacks 3 — no purchase or trial window. Shares Strategy with Cossacks 3.
The universe is full of Starlings, tiny orange aliens that want to take over the galaxy. Create your own space colony, fight epic battles and discover new planets. Train your soldiers, develop your technology and create unimaginable gadgets. Enjoy this huge social game with friends!
- 6
Relic Arena
Free-to-play alternative to Cossacks 3 — no purchase or trial window. Shares Action and Strategy with Cossacks 3.
Relic Arena is an 8-player free-to-play autobattler by Dota 2 personalities SUNSfan and Jenkins. Equip heroes with historical relics, that provide unique abilities and upgrades, under the command of legendary historical figures such as Cleopatra and Harambe.
- 7
Landfall Archives
Free-to-play alternative to Cossacks 3 — no purchase or trial window. Shares Action and Strategy with Cossacks 3.
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
War of Dots
Free-to-play alternative to Cossacks 3 — no purchase or trial window. Shares Strategy with Cossacks 3.
Easy to learn, hard to master. A simple & free RTS game.