Free games like Natural Selection 2
Below are 10 free-to-play Steam games similar to Natural Selection 2, 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 Natural Selection 2 page.
Ranked picks
- 1
Counter-Strike 2
Free-to-play alternative to Natural Selection 2 — no purchase or trial window. Shares Action with Natural Selection 2.
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.
- 2
Dirty Bomb®
Free-to-play alternative to Natural Selection 2 — no purchase or trial window. Shares Action with Natural Selection 2.
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.
- 3
Tom Clancy's Rainbow Six Siege
Free-to-play alternative to Natural Selection 2 — no purchase or trial window. Shares Action with Natural Selection 2.
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.
- 4
Splitgate
Free-to-play alternative to Natural Selection 2 — no purchase or trial window. Shares Action and Indie with Natural Selection 2.
Splitgate is a free-to-play, fast-paced multiplayer shooter that features player-controlled portals. This sci-fi shooter takes the FPS genre to a new dimension with its portal mechanics, delivering high-flying, multi-dimensional combat.
- 5
Empires Mod
Free-to-play alternative to Natural Selection 2 — no purchase or trial window. Shares Action and Strategy with Natural Selection 2.
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.
- 6
MechWarrior Online™ Legends
Free-to-play alternative to Natural Selection 2 — no purchase or trial window. Shares Action and Strategy with Natural Selection 2.
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.
- 7
Battlerite
Free-to-play alternative to Natural Selection 2 — no purchase or trial window. Shares Action with Natural Selection 2.
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!
- 8
King Arthur's Gold
Free-to-play alternative to Natural Selection 2 — no purchase or trial window. Shares Action and Indie with Natural Selection 2.
Would you enjoy building CASTLES, traps and siege machines in MULTIPLAYER? And then undermine your opponents castle and collapse it with 2D PHYSICS & DESTRUCTION?
- 9
NS2: Combat
Free-to-play alternative to Natural Selection 2 — no purchase or trial window. Shares Action and Indie with Natural Selection 2.
NS2: Combat is a powerful twitch-shooter where space marines battle aliens through a competitive mixture of MOBA & FPS playstyles. Are you ready?
- 10
PlanetSide 2
Free-to-play alternative to Natural Selection 2 — no purchase or trial window. Shares Action with Natural Selection 2.
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.