Free games like COSMOS
Below are 8 free-to-play Steam games similar to COSMOS, 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 COSMOS page.
Ranked picks
- 1
STRAFTAT
Free-to-play alternative to COSMOS — no purchase or trial window. Shares Action with COSMOS.
STRAFTAT is a 1v1/2v2 ONLINE first person SHOOTER with quick rounds in over 350 MAPS ; Including all WEAPONS, proximity chat and 4 players FFA.
- 2
Counter-Strike:Global Offensive
Free-to-play alternative to COSMOS — no purchase or trial window. Shares Action with COSMOS.
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.).
- 3
The Expendabros
Free-to-play alternative to COSMOS — no purchase or trial window. Shares Action and Indie with COSMOS.
The Expendabros have assembled and set their sights on the forces of ruthless arms dealer Conrad Stonebanks in the forests of Eastern Europe.
- 4
Iron Snout
Free-to-play alternative to COSMOS — no purchase or trial window. Shares Action and Indie with COSMOS.
Iron Snout is a fast, colorful and brutal fighting game in which you will be helping a piglet fight for its life against hordes of wolves.
- 5
Disfigure
Free-to-play alternative to COSMOS — no purchase or trial window. Shares Action and Indie with COSMOS.
Disfigure is a grim-dark action rogue-like where you battle relentless hordes of monsters lurking in the shadows. Unlock powerful weapons, craft god-like builds with hundreds of upgrades, slay colossal bosses, and push your limits in intense 20–30 minute survival runs!
- 6
The Lab
Free-to-play alternative to COSMOS — 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!
- 7
Princess Remedy in a World of Hurt
Free-to-play alternative to COSMOS — no purchase or trial window. Shares Action and Indie with COSMOS.
Remedy, a recent graduate from the Saturnian healing school, must descend to Hurtland and use her powers to heal everyone from stray ducks to dark lords, and finally cure the ailing Prince Hingst. It's a short, whimsical adventure with plenty of heart(s).
- 8
I MAED A GAM3 W1TH Z0MB1ES 1N IT!!!1
Free-to-play alternative to COSMOS — no purchase or trial window. Shares Action and Indie with COSMOS.
A top down twin stick zombie slaying shooter that you are sure to play again and again!