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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1 comment by poompoom500 on Feb 27th, 2014

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.

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Killing Floor Linux version

Killing Floor Linux version

Dec 31, 2011 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]

Dec 19, 2011 Full Version 14 comments

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

Killing Floor 2.5

Killing Floor 2.5

Jul 5, 2008 Full Version 86 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

Dec 17, 2007 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

Killing Floor 2.11 Community Patch

Aug 15, 2007 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

Killing Floor 2.1 Patch

Aug 14, 2007 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 952)
Technodude010 Jul 10 2012, 5:14pm says:

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?

-3 votes     reply to comment
poompoom500 Creator
poompoom500 Jul 13 2012, 2:33am replied:

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.

+4 votes   reply to comment
UnShame Jul 11 2012, 7:46pm replied:

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

+4 votes     reply to comment
DevonO0789 Jul 12 2012, 8:48am replied:

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.

+2 votes     reply to comment
AJ_Quick Creator
AJ_Quick Jul 13 2012, 8:46am replied:

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

+2 votes   reply to comment
hotrodhunter12 Jul 8 2012, 6:27pm says:

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!!!!!!

+2 votes     reply to comment
UnShame Jul 11 2012, 7:44pm replied:

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

+2 votes     reply to comment
zoren580 Jul 6 2012, 8:58am says:

ONSB texture error

+2 votes     reply to comment
UnShame Jul 11 2012, 7:47pm replied:

download ECE bonus pack

+2 votes     reply to comment
Dreadx182 Apr 27 2012, 10:38pm says:

How do u install mission maps? Please pm me or contact me at

+2 votes     reply to comment
poompoom500 Creator
poompoom500 Jun 14 2012, 5:37pm replied:

To Dreadx182,

Sorry it took a while to reply to your question. Been distracted with a newer zombie game being developed via UDK. Anyways, you install a mission map the same way you install any regular KF maps, by extracting it to the C:\Program Files\Unreal Tournament 2004\KFMod20\Maps.

+2 votes   reply to comment
Dreadx182 Apr 27 2012, 12:40am says:

Great mod once you get use to the no crosshair thing just would be better if there was a larger player base or atleast a single player campain cause it seems with UT2004 not really much people play proberly they prefer the newer version of the unreal series

+1 vote     reply to comment
Rajliv May 2 2012, 2:24am replied:

UT2004 is the most popular game in the Unreal series

+3 votes     reply to comment
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Release Date
Released Aug 2007
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Nov 29 2010, 11:13am by JKeltner95

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