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 88 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  (20 - 30 of 952)
PatPeter Jan 26 2014 says:

I receive this error, does anyone know how to fix it?

General protection fault!

History: UObject::ProcessEvent <- (KFHumanPawn KF-WestLondon.KFHumanPawn, Function KFMod.KFPawn.PostNetBeginPlay) <- ULevel::SpawnActor <- (KFHumanPawn) <- UObject::ProcessEvent <- (KFGameType KF-WestLondon.KFGameType, Function KFMod.KFGameType.PendingMatch.Timer) <- AActor::Tick <- TickAllActors <- ULevel::Tick <- (NetMode=2) <- TickLevel <- UGameEngine::Tick <- Level KF-WestLondon <- UpdateWorld <- MainLoop <- FMallocWindows::Free <- FMallocWindows::Realloc <- 676F4C57 0 FArray <- FArray::Realloc <- 0*2 <- FMallocWindows::Free

+1 vote     reply to comment
poompoom500 Creator
poompoom500 Feb 28 2014 replied:

Looks to me like you have the problem with the West London map. Did you edit the map? There is something in that map that crashes the game.

+1 vote   reply to comment
Saracen-Rue Mar 18 2014 replied:

I get that same problem but with me it says KFClotPawn. instead but this only happens on random maps and I dont see a reason for it.
Also I get a problem where sometimes if I get hit or take damage the screen goes completely white, but I can still see the HUD and my guys gun. It only goes back to normal if I get away from the specimen attacking me, which is hard when I cannot see them.
again this only happens on random maps and it appears for no reason at all.

+1 vote     reply to comment
poompoom500 Creator
poompoom500 Mar 19 2014 replied:

My suggestion is to take note which maps give you the problem, then post them here. We'll see what exactly the maps have that causes this problem(s). This must have something to do with zone (glitch in the zoning).

+1 vote   reply to comment
BluePudding Sep 7 2013 says:

스팀판으로 출시되기전 언리얼토너먼트 2004의 모드였던 킬링플로어..! 예전버전도 할만해보입니다.

+1 vote     reply to comment
shave Aug 13 2013 says:


+1 vote     reply to comment
duststorm9711 May 19 2013 says:

It wouldn't let me play normal UT2004, so I uninstalled it, and now I can't play either one of them. I get this error message:

Failed to enter Entry: Can't find file for package 'InterfaceContent'

Anybody know how to fix this?

+1 vote     reply to comment
Guest Jan 8 2014 replied:

This comment is currently awaiting admin approval, join now to view.

Rajliv Jun 16 2013 replied:

It doesn't affect UT2004 at all, you must have installed it wrongly.

+1 vote     reply to comment
Olle46 Mar 19 2013 buried:


killing floor is already a game made by trip wire

-8 votes     reply to comment
a94uricom Apr 11 2013 replied:

When you DO not know anything about the subject just DO not talk about it , or read the description : it says that it was released in 2007 (even if 1.0 was released in 2005), and KF retail (the game, not the mod) was out in 2009.

+5 votes     reply to comment
Blake943 Mar 20 2013 replied:

I see you need small explain,first at all Killing Floor start as mod made by AJ_Quick,later TI took over the right to mod and made standalone KF.

+5 votes     reply to comment
brunocar Feb 27 2014 replied:

no. this mod is no longer up to date

+1 vote     reply to comment
Blake943 Mar 2 2014 replied:

What is your point here?
TBH this don't change the fact that KF Mod WAS MADE BEFORE KF Retail.

+1 vote     reply to comment
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Nov 29 2010 by JKeltner95

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