Free games like Counter-Strike: Condition Zero
Below are 9 free-to-play Steam games similar to Counter-Strike: Condition Zero, 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 Counter-Strike: Condition Zero page.
Ranked picks
- 1

Tom Clancy's Rainbow Six Siege
Free-to-play alternative to Counter-Strike: Condition Zero — no purchase or trial window. Shares Action with Counter-Strike: Condition Zero.
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.
- 2

Counter-Strike:Global Offensive
Free-to-play alternative to Counter-Strike: Condition Zero — no purchase or trial window. Shares Action with Counter-Strike: Condition Zero.
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

World of Warships
Free-to-play alternative to Counter-Strike: Condition Zero — no purchase or trial window. Shares Action with Counter-Strike: Condition Zero.
Immerse yourself in thrilling naval battles and assemble an armada of over 800 ships from the first half of the 20th century — from stealthy destroyers to gigantic battleships. Change the look of your ship, choose upgrades to suit your play style, and go into battle with other players!
- 4

Dirty Bomb®
Free-to-play alternative to Counter-Strike: Condition Zero — no purchase or trial window. Shares Action with Counter-Strike: Condition Zero.
Work together or die alone! Fight to restore peace to London or tear it down for profit in the most challenging team based shooter around.
- 5

Dota 2
Free-to-play alternative to Counter-Strike: Condition Zero — no purchase or trial window. Shares Action with Counter-Strike: Condition Zero.
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.
- 6

PlanetSide 2
Free-to-play alternative to Counter-Strike: Condition Zero — no purchase or trial window. Shares Action with Counter-Strike: Condition Zero.
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.
- 7

MechWarrior Online™ Legends
Free-to-play alternative to Counter-Strike: Condition Zero — no purchase or trial window. Shares Action with Counter-Strike: Condition Zero.
MechWarrior Online™ Legends is a tactical, 'Mech-based online shooter set in the vast BattleTech Universe. Assume the role of an elite MechWarrior, piloting powerful BattleMechs, fighting for supremacy over the Inner Sphere.
- 8

Battlerite
Free-to-play alternative to Counter-Strike: Condition Zero — no purchase or trial window. Shares Action with Counter-Strike: Condition Zero.
BATTLERITE is an action-packed team arena brawler. Experience the unique combination of top-down shooter meets fast-paced fighting game and challenge friends and foes in a battle of reaction. The Arena awaits!
- 9

Team Fortress 2
Free-to-play alternative to Counter-Strike: Condition Zero — no purchase or trial window. Shares Action with Counter-Strike: Condition Zero.
Nine distinct classes provide a broad range of tactical abilities and personalities. Constantly updated with new game modes, maps, equipment and, most importantly, hats!