Set in the immediate aftermath of the zombie apocalypse, Left 4 Dead's survival co-op mode lets up to four players blast a path through the swarming zombie hordes and terrifying mutant monsters. Guide your survivors across the rooftops of an abandoned metropolis, through rural ghost towns and pitch-black forests in your quest to escape a devastated Ground Zero crawling with infected enemies.

New technology dubbed the "AI Director" is used to generate a unique gameplay experience every time you play. The Director tailors the frequency and ferocity of the zombie attacks to your performance, putting you in the middle of a fast-paced, but not overwhelming, Hollywood horror movie.

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Blog RSS Feed Post news Report abuse Latest News: Introducing the Source Filmmaker!

22 comments by Maxen1416 on Jun 27th, 2012

The Source Filmmaker (SFM) is the movie-making tool built and used by the staff at Valve to make movies inside the Source game engine. Because the SFM uses the same assets as the game, anything that exists in the game can be used in the movie, and vice versa. By utilizing the hardware rendering power of a modern gaming PC, the SFM allows storytellers to work in a what-you-see-is-what-you-get environment so they can iterate in the context of what it will feel like for the final audience.

To celebrate the announcement of the SFM, They've also released "Meet the Pyro", the ninth installment in the "Meet the Team" series. Like all of Their animated shorts, They made it using the SFM.

If you're interested in making movies and games in parallel, sign up for an SFM beta key and start shooting your movie on location inside the world of TF2 today.

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Source Multi-Tool 1.0

Source Multi-Tool 1.0

Nov 23, 2013 Mapping Tool 5 comments

I've been working away at this for quite awhile now and after many revisions I'm happy to release version 1.0 of the new Source Multi-Tool. Source Multi-Tool...

Left 4 Dead 2 Random Map Generator

Left 4 Dead 2 Random Map Generator

Oct 6, 2012 Mapping Tool 20 comments

This random map generator for Left 4 Dead 2 mends predefined tiles together to a new level. The project is based on python and includes a crude VMF (Valve...

Elements of War 1337 Board v8

Elements of War 1337 Board v8

Jan 2, 2012 Full Version 19 comments

Elements of War: 1337 Board is a HotkeyZ Menu based on Config.cfg from id Software's Quake engine and Valve Software's Gold Source and Source engines...

Ultimate Builder

Ultimate Builder

Jan 13, 2011 Other 1 comment

The updated version of this is now merged with another custom menu, they are both in the same file, so two for one. It's called, called 'Custom Radial...

L4D Survival Map - Wetwork

L4D Survival Map - Wetwork

Nov 4, 2010 Full Version 4 comments

4 survivors are stuck on a rather familiar cargo ship as they sail across the Atlantic, but they fear the infection got on board before they left.

1337 Board v7

1337 Board v7

Jun 6, 2010 Full Version 89 comments

Hotkeys Menu! ModZ/Quake/HL/HL2/CS/CS:S/L4D/L4D2/PortaL/2/Dark Messiah/Call of Duty/World of WarCraft Etc Etc Etc...!!!

Post comment Comments  (30 - 40 of 208)
TheDiddyHop Dec 27 2010, 7:03am says:

This game is AWESOME!! i only started playing yesterday but its still AWESOME. i'm also suprised that the plane crash didnt crash my computer (cause ma computer sucks)

+2 votes     reply to comment
nose-bLeed Dec 4 2010, 7:29pm says:

i lov this game ...i can kill zombys ,see blood and gore , have team work , much fun

+2 votes     reply to comment
zombieluvar Nov 14 2010, 2:55pm buried:


can't find the stupid pc version!!!!!!!

-7 votes     reply to comment
KEVLAR60442 Nov 21 2010, 5:07pm replied:

1. Go to the steam store.
2. type "Left 4 Dead"
3. click on the link that says "Left 4 Dead"
4. Add to cart, purchase, and download.
5. Take mouth, insert foot.

+12 votes     reply to comment
Cremat0r Dec 20 2010, 6:50pm replied:

I love your answer!

+3 votes     reply to comment
SirWallyWombat Oct 28 2010, 11:42pm says:

If you want more custom campaigns for L4D & L4D 2, then go to they have alot, infact almost all of them. Its the best place to post your maps.

+5 votes     reply to comment
REENIGAV Oct 21 2010, 12:53pm says:

I have a problem. When i want to play multiplayer it appears loading and when it starts it closes and say there is a problem with the connection. What is going on? I have left 4 dead on steam.

+2 votes     reply to comment
Auth3ntic0 Dec 21 2010, 8:11am replied:

Had the same problem. Turned out to be my modem which was restarting when trying to play on every server. Same happened to every source game. Suggest you change your internet provider like I did.

+2 votes     reply to comment
GmansFan Nov 21 2010, 10:21am replied:

Are you connected to the Internet?

+2 votes     reply to comment
Auth3ntic0 Oct 6 2010, 3:33am says:

- Added VPK audio cache support.

Hell YEA!

+2 votes     reply to comment
Auth3ntic0 Oct 6 2010, 4:25am replied:

It looks like I can't hear the survivors longer dialogues on The Sacrifice for some reason. Anyone know why? Could it be from downloaded maps?

+2 votes     reply to comment
Auth3ntic0 Oct 7 2010, 3:30am replied:

Solved. I had to disable every custom map I had installed and snd_rebuildaudiochache again.

+2 votes     reply to comment
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Left 4 Dead
Windows, X360
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Released Nov 2008
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Highest Rated (3 agree) 10/10

The infected look better in L4D 1 than L4D 2

Aug 27 2012, 4:12am by ´╗┐╬╗pone

First Person Shooter
Single & Multiplayer
Left 4 Dead
Left 4 Dead Single & Multiplayer First Person Shooter
Left 4 Dead 2
Left 4 Dead 2 Single & Multiplayer First Person Shooter
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