Free games like Operation Thunderstorm
Below are 9 free-to-play Steam games similar to Operation Thunderstorm, 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 Operation Thunderstorm page.
Ranked picks
- 1
STRAFTAT
Free-to-play alternative to Operation Thunderstorm — no purchase or trial window. Shares Action with Operation Thunderstorm.
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 Operation Thunderstorm — no purchase or trial window. Shares Action with Operation Thunderstorm.
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 Lab
Free-to-play alternative to Operation Thunderstorm — 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!
- 4
erdetspill
Free-to-play alternative to Operation Thunderstorm — no purchase or trial window. Shares Action with Operation Thunderstorm.
Bestefar vil ha 2 is. Du må skaffe de. Det viser seg å være mer komplisert enn du trodde. Et absurd førstepersons-eventyrspill der du navigerer norsk byråkrati, snakker med rare folk og løser meningsløse oppdrag - i en liten norsk bygd.
- 5
Hog Hunter 2021
Free-to-play alternative to Operation Thunderstorm — no purchase or trial window. Shares Action with Operation Thunderstorm.
Hog hunter is a short atmospheric game about catching hogs out in the wild, be careful though not everything in the woods is safe...
- 6
Nazi Zombies
Free-to-play alternative to Operation Thunderstorm — no purchase or trial window. Shares Action with Operation Thunderstorm.
Nazi Zombies is a cooperative survival game where players fend off escalating waves of Nazi zombies, earning points by killing zombies and repairing barriers to buy weapons, upgrades, perks, and unlock new map areas to maximize their survival.
- 7
Counter-Strike 2
Free-to-play alternative to Operation Thunderstorm — no purchase or trial window. Shares Action with Operation Thunderstorm.
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.
- 8
Tom Clancy's Rainbow Six Siege
Free-to-play alternative to Operation Thunderstorm — no purchase or trial window. Shares Action with Operation Thunderstorm.
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.
- 9
Fog Of War - Free Edition
Free-to-play alternative to Operation Thunderstorm — no purchase or trial window. Shares Action with Operation Thunderstorm.
Tactical Multiplayer FPS shooter with a story based on the events of the World War II. Strategic battles with a variety of vehicles, including artillery. Multiple game modes. Ranks, titles, awards, career.