Killing Floor
Killing Floor: co-op for up to 6 players, on Linux, PC and Mac, came out 14 May 2009.
Want to play Killing Floor with friends?
Pick a night together in Lobbli: everyone marks when they are free, and you see which evening works.
Playing it together
Great co-op zombie shooter with friends, but public lobbies are thin now.
Pros
- Teamwork through tense waves makes co-op with friends fun
- Public lobbies often have helpful, friendly players
Cons
- Public matches are hard to find; few players are online now
- Match setup is clunky and hard to get right
Lobbli's AI summary of 20 Steam reviews about playing together, October 2026. It can get things wrong.Read them on Steam
Quick answers
From its Steam page: co-op, crossplay, player count.
Is Killing Floor co-op?
Yes, Killing Floor has a co-op mode.
How many players?
Up to 6 players.
Split screen?
No split screen mode is listed for it.
When did it come out?
14 May 2009.
Which platforms?
Linux, PC and Mac.
Crossplay?
Yes, according to its Steam page.
What kind of game is it?
Shooter
Who makes it?
Tripwire Interactive
About Killing Floor
Killing Floor is a Co-op Survival Horror FPS set in the devastated cities and countryside of England after a series of cloning experiments for the military goes horribly wrong. You and your friends are members of the military dropped into these locations with a simple mission: Survive long enough to cleanse the area of the failed experiments!