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
Slow-motion “ZEDtime” to better watch those crucial and violent creature deaths, even in multiplayer
Solo game mode for offline play
Nine different monster types trying to eat your face off, armed with everything from teeth and claws, to chainsaws, chain-guns and rocket-launchers
12+ 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
Includes Windows-only SDK for the creation of new levels and mods
Graphics: 128 MB DX9 Compliant with PS 2.0 support
Storage: 2 GB free hard drive space
Sound card: Eax Compatible
macosx Minimum
OS: OS X version Leopard 10.5.8, Snow Leopard 10.6.3, or later.
Processor: Intel Mac
Graphics: Nvidia or ATI GPU (Intel GPUs unsupported)
linux Minimum
OS: Ubuntu 12.04 LTS, fully updated
Processor: 1.2 GHZ or Equivalent
Memory: 1 GB RAM
Graphics: Nvidia, ATI, or Intel GPU with hardware-accelerated drivers
Storage: 2 GB free hard drive space
linux Recommended
OS: Ubuntu 12.04 LTS, fully updated
Processor: 2.4 GHZ or Equivalent
Memory: 2 GB RAM
Graphics: Nvidia, ATI, or Intel GPU with hardware-accelerated drivers
Storage: 2 GB free hard drive space
To activate the game, you need a Steam Account
Login or register at the official Steam Website and download Steam client
Install and start application, login with your Account name and Password
Click the Games Menu.
Choose Activate a Product on Steam...
Follow the onscreen instructions to complete the process
After the successful code verification, go to the "MY GAMES" tab and start downloading.
News & Updates
2026-03-09
Cursed Date? Not for Our Lucky Customers
Even though Friday the 13th is widely considered as an unlucky date, we at YUPLAY are trying to flip the script for that and turn it into a lucky day for you and this time is not an exception to the rule! We are delighted to announce our FRIDAY 13TH promo and you should absolutely read on the article in order to find out how to best take advantage of this campaign and turn your luck in the right direction for the occasion…
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Some functionality is not accessible when using the default controller configuration, requiring use of the touchscreen or virtual keyboard, or a community configuration
This game sometimes shows mouse, keyboard, or non-Steam-Deck controller icons
In-game interface text is legible on Steam Deck
This game's default graphics configuration performs well on Steam Deck
