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Left 4 Dead
Left 4 Dead is a singleplayer and multiplayer cooperative survival horror FPS game.
Installing Left 4 Dead Mods - The Easy Way
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Modding Left 4 Dead isn't easy, and neither is installing the mods
So, have you ever wanted to install a mod that you really REALLY liked, but to find out you couldn't get it working in Left 4 Dead 1? Well, today I am going to teach you how to install mods into Left 4 Dead and make Left 4 Dead more user friendly to mods (to a point)
Step 1: Unpacking the Main VPK
Now, this step kinda requires many steps, but it's easy once you know what you're doing.

Step 1.1:
Download GCFScape, you will need this to even extract the VPK.

Step 1.2:
Open up the VPK "Pak01_Dir.VPK" found in your "Left 4 Dead/left4dead" (which is found in "Steam/SteamApps/Common")
Step 1.3:
Extract it into your Left 4 Dead folder "left4dead"
Step 1.4:
Exit out of the VPK and rename it from "Pak01_Dir" to something else, like: "Pak01_Dira"

If you're in need of hard drive space, delete all of the VPK files found in the root. We won't be overwriting any files in the "left4dead" folder.
Step 2: Making a mod folder for Left 4 Dead
This step also has more than one step, but less than the top one.

Step 2.1:
Make a "left4dead_Mods" folder in the root where your "left4dead" and "left4dead_dlc3" folder sits.
(Disclaimer: There's a lot of language folders in the directory of Left 4 Dead, I hid them so you can see the main folders.)
Step 2.2:
Go into the GameInfo.txt inside of "left4dead" and add in "Game				left4dead_mods" under "SearchPaths"
Step 3: Installing a Mod
Obviously, since you just made a mods folder, it's going to be empty, like this:
But obviously, you're gonna install mods.

As an example, I'm going to install a recent port I did of the Aftermath Zoey.
Step 4: Testing it
Now that you've installed the mod, it's time to test if everything is working fine.

So, now it's time to launch up Left 4 Dead!
Step 5 (only if the mod didn't work): Finding out what went wrong
Sometimes stuff may break, so here's somethings to look into

Addons folder VPKs:
I haven't tested if these work with this method, if it doesn't, just move it over to the "left4dead" folder or unpack it into the "left4dead_mods" folder.

Forgot to remove Pak01_Dir:
Check to be sure you renamed Pak01_Dir or removed it with the rest of the VPKs.

Renamed files:
Now, a lot of mods provide renamed files to edit the Pak01_Dir.VPK, no idea if these renames will cause any issues within this method, if it does, you may need to hex edit their names back to normal.
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RandyTheBoi 5 days ago
Okay 1 question,what do i do,because i've now got windows 10,and the GCFscape won't do it's thing.
Mollythebunnie June 2017
So it worked the first time I ran the game after doing this but now everytime it loads the hunting rifle (which is what the mod I installed is for) the game crashes and sometiems the hunting rifle is just invisible in the world and the viewmodel.
Theuaredead` last month
Just be sure the Hunting Rifle is named correctly. A lot of legacy mods make an edit to the main VPK to read a different named model in the L4D1 root.
JimmyElLoquendero27 May 2017
Works Online?
AskAlexMercer May 2017
its works but you must copy files to have it for if you dont want to have replacements so you put all mods in dir. did you all know now ? if yes thank you very much
melro324 May 2017
i got it right now... thanks for this
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