Killing Floor is a survival horror total conversion set in London, England.

In a laboratory under the city, a series of human experiments in cloning and biological augmentation are being conducted by the employees of "Horizon". Horizon is a BioTech corporation formerly employed by the government to do the R&D on a top secret series of synthetic combat drugs which would enhance the effectiveness of soldiers in the field.

Horizon's funding was cut, when their practices were deemed too immoral even for such a controversial project, but the research didn't stop. Funded by private money from the deep pockets of Horizon chairman and research scientist Kevin Clamely, tests continued in a more...private location.

That was until something went wrong. There were reports that the lab had been comprimised; that the subjects were behaving abnormally...then, silence.

Several days later, twisted shapes began to emerge from the confines of the lab into the city above.


* Killing Floor Co-op Survival Horror (Tripwire)
* Killing Floor Mod Wikipedia
* Killing Floor Mod Wiki
* KF Mod Community Team
* Killing Floor (UT2004) Klub
* MahloeehDnM Killing Floor Server

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Yes, it is true. My friend the developer whose name I will not divulge, as well as myself, have made some major improvements to the game. We have added more and newer weapons, and a new character which I called the 'Infected'. The additions are displayed below (namely the new textures of the Killing Floor mod characters):

1. Bloat

KFMod30 Pic 1

2. Clot

KFMod30 Pic 2

3. Crawler

KFMod30 Pic 3

4. Gorefast

KFMod30 Pic 4

5. Infected (New)

KFMod30 Pic 5

6. Scrake

KFMod30 Pic 6

7. Siren

KFMod30 Pic 7

8. Stalker

KFMod30 Pic 8

NOTE: There are more updates in the latest version, which will be posted in another news article. Updates in the weapons list. Stay tuned.

Killing Floor Forum Is Active

Killing Floor Forum Is Active

News 1 comment

The Killing Floor mod is still alive. And the forum is available to those who want to post anything related to the mod.

Zoo's Clone Bandits Vehicles For KF Mod

Zoo's Clone Bandits Vehicles For KF Mod

News 0 comments

Get some wheels for your mod. Place Zoo's Clone Bandits' vehicles to your KF Mod maps.

Tripwire Interactive Announces Killing Floor

Tripwire Interactive Announces Killing Floor

News 147 comments

The cult favorite Unreal 2k4 mod goes retail on Steam!

Patriarch Gameplay Video + Map Contest!

Patriarch Gameplay Video + Map Contest!

News 31 comments

What do you get when you match the mutated evolution of a research biologist against an armed-to-the-teeth commando? Just over a minute of bedlam, of...

Killing Floor Linux version

Killing Floor Linux version

Full Version 1 comment

Killing Floor mod Linux version with installer and a few nice features like a cache extractor and playlist generator

Killing Floor 2.52 [Zip archive]

Killing Floor 2.52 [Zip archive]

Full Version 16 comments

Just a zip version as an alternative to the Windows Installer, extract under UT2004

Killing Floor 2.5

Killing Floor 2.5

Full Version 90 comments

The definitive cooperative survival horror mod for UT2004. Play as part of a squad of soldiers, attempting to survive a horrific onslaught. Use weaponry...

Killing Floor 2.5 Trailer

Killing Floor 2.5 Trailer

Trailers 10 comments

Warning : this video contains what could be considered EXTREME and GRAPHIC depictions of violent acts being performed by, and against escaped laboratory...

Killing Floor 2.11 Community Patch

Patch 2 comments

This is a huge update. I would download this if you want to play online so download this to play game. It fixes lots of problems and adds some cool new...

Killing Floor 2.1 Patch

Patch 0 comments

This fixes some minor errors for 2.0. Recommended if you want to play game only, most use this update.

Post comment Comments  (50 - 60 of 957)

Hey guys, i want to play the old killing floor for the first time, but i can't start it up, the following box appears when attempt to launch:

Critical Error

KFMod Build UT2004_Build_[2005-11-23_16.22]

OS: Windows NT 6.1 (Build: 7601)
CPU: GenuineIntel PentiumPro-class processor @ 2943 MHz with 4095MB RAM
Video: No Video

Assertion failed: sizeof(*this)==GetClass()->GetPropertiesSize() [File:.\UnGame.cpp] [Line: 148]

History: UGameEngine::Init <- InitEngine <- FMallocWindows::Free

Any help would be appreciated

Thank you.

Reply Good karma Bad karma+2 votes

Is UE2.5 :D LOL)

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AJ_Quick CreatorSubscriber

what has that got to do with anything o_ 0

@ RippinZense - that error doesn't really say much. You're better off checking the game's log file for more info \System\KillingFloor.log

Reply Good karma+2 votes

Okay, so there's KF retail and this UT 2004 mod. Are they in any way connected? Is it the same developer? If not, isn't that copyright?

Reply Good karma Bad karma-3 votes
poompoom500 Creator

To Technodude010,

Well, Alex Quick is the author of Killing Floor (UT2004) mod which was eventually sold to Tripwire and was enhanced to Killing Floor retail.

Reply Good karma+4 votes

obviously, people who created Killing Floor the game, created this mod before

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originally, this mod came out before the retail version, but it was made by someone else. The people who made Red Orchestra (Tripwire Interactive) became developers and made Red Orchestra into a game, then they asked the owner of the Killing Floor mod if they could own the rights to it, he agreed. The KFmod isn't owned by Tripwire, just the retail version, the people who own the mod as of right now is MiASMA.

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AJ_Quick CreatorSubscriber

incorrect. Killing Floor - in all it's variations (mod , retail, etc) is the property of tripwire interactive.

Reply Good karma+2 votes

I just got the mod and when i start UT 2004 it takes me strate to the Killing Floor menu So i cant play UT 2004 any more HELP!!!!!!

Reply Good karma Bad karma+2 votes

you should've put KillingFloor folder (or mb KF or something, idk) INSIDE your UT2004 directory and then run the mod through the Community menu in UT2004 or with shortcut

Reply Good karma Bad karma+2 votes
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Nov 29 2010 by JKeltner95

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