Action · May 14, 2009

Killing Floor (2009)

calendar_todayAge 17+trophy285 achievementsextension21 DLClocal_offer-75% current discountgroup1M–10M ownerstrending_up224 peak concurrentrecommend39.4k recommendations
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! Cooperative gameplay for up to six players against multiple waves of specimens Persistent Perks system, allowing players to convert their in-game achievements into permanent improvements to their character's skills and abilities Over 170 Steam Achievements, including “Dignity for the dead” for killing 10 enemies feeding on dead teammates' corpses and “Hot Cross Fun” for finishing off 25 burning enemies with a Crossbow Slow-motion “ZEDtime” to better watch those crucial and violent creature deaths, even in multiplayer Solo game mode for offline play Ten different monster types trying to eat your face off, armed with everything from teeth and claws, to chainsaws, chain-guns and rocket-launchers 33+ weapons for the players to chose from, ranging from knives and fire-axes to pump shotguns, rifles and a flamethrower Equip your team with welders, medical tools and body armor to help your odds of survival Choose which Perks to play with to best balance out your co-op team against the horrors Open, non-linear play areas: choose when and where to fight — or run; weld doors closed to direct the monster horde down alternate corridors Fully-configurable, allowing players to change the difficulty level, number of creature waves, or even set up their own favorite waves of monsters Support for Steam Friends and other Steamworks features Includes Windows-only SDK for the creation of new levels and mods

Action releases from 2009

45 Action titles launched in 2009 — top 6 by review volume.

Position in Action

MetricThis titleGenre position
Review volume67.5k Steam reviewsTop 9% in Action
Positive rating95% positiveGenre average: 83% — this title sits in top 14%
Metacritic72/100Genre average 77 — top 77% of Action titles
Concurrent peak224 playersTop 23% in Action by live player count
Engagement hours30 h averageTop 15% for session depth among Action

Community Tag Signals

Tag weights reflect how many Steam users voted each descriptor — larger pills = stronger consensus.

  • FPS · 1.7k
  • Zombies · 1.7k
  • Co-op · 1.6k
  • Survival · 1.2k
  • Horror · 1.1k
  • Multiplayer · 1.1k
  • Action · 1.1k
  • Online Co-Op · 968
  • Violent · 874
  • Gore · 852
  • Shooter · 788
  • Team-Based · 588
  • First-Person · 521
  • Survival Horror · 422
  • Moddable · 378

Peer Action titles

Comparable titles in the same genre and review-volume band — ranked by Steam positive percentage.

Localization Coverage

Interface / Subtitles (8)

  • English volume_up
  • French volume_up
  • Italian volume_up
  • German volume_up
  • Spanish - Spain volume_up
  • Hungarian
  • Polish
  • Russian volume_up

Full audio (6)

  • English
  • French
  • Italian
  • German
  • Spanish - Spain
  • Russian

Reception Metrics

Steam community

95%Overwhelmingly Positive · 67.5k reviews

64.1k positive · 3.4k negative

Metacritic

72/100 critic aggregate

Open Metacritic page

Metacritic user score

8.6/10

Curator recommendations

39.4k

Peak concurrent players

224

Features & Capabilities

Multiplayer

  • Multi-player
  • Co-op
  • Cross-Platform Multiplayer

Community

  • Steam Achievements
  • Steam Trading Cards
  • Steam Workshop
  • Stats

Other

  • Single-player
  • Valve Anti-Cheat enabled
  • Includes level editor
  • Family Sharing

Engagement Profile

All-time avg

30h

moderate (15–40 hours)

Median

5h

Typical completion time

2-week avg

35h

Current engagement

Achievements

285

Steam unlocks available

Release & Availability

Release dateMay 14, 2009
DeveloperTripwire Interactive
Base price$4.99 -75%
Required age17+
DLC / Add-ons21 released
PlatformsWindows, macOS, Linux
Estimated owners1M–10M
External linksOfficial site · Metacritic page · Support

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Tripwire Interactive has 5 titles indexed — all listed below.

Editions & Packages

  • Buy Killing Floor