Free games like Killing Horizon
Below are 8 free-to-play Steam games similar to Killing Horizon, 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 Killing Horizon page.
Ranked picks
- 1
STRAFTAT
Free-to-play alternative to Killing Horizon — no purchase or trial window. Shares Action with Killing Horizon.
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 Killing Horizon — no purchase or trial window. Shares Action with Killing Horizon.
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 Killing Horizon — 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
Landfall Archives
Free-to-play alternative to Killing Horizon — no purchase or trial window. Shares Action and Strategy with Killing Horizon.
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!
- 5
Shape of Dreams: Prologue
Free-to-play alternative to Killing Horizon — no purchase or trial window. Shares Action and Indie with Killing Horizon.
《Shape of Dreams: Prologue》is a unique game that blends action roguelite with MOBA-style gameplay. Edit your character's Memories to create your own champion. Face all challenges alone or play with friends in up to 4-player co-op.
- 6
SCP – Containment Breach
Free-to-play alternative to Killing Horizon — no purchase or trial window. Shares Action and Indie with Killing Horizon.
A procedural first-person horror adventure. You are on your own after something goes terribly wrong in this top-secret containment facility. Collect items to aid in your escape and try to uncover the truth, as horror lurks behind every door. Can you make it out alive?
- 7
Counter-Strike 2
Free-to-play alternative to Killing Horizon — no purchase or trial window. Shares Action with Killing Horizon.
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
Dota 2
Free-to-play alternative to Killing Horizon — no purchase or trial window. Shares Action and Strategy with Killing Horizon.
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.