Left 4 Dead 2
Left 4 Dead 2 is a cooperative first-person shooter video game, the sequel to Valve Corporation's Left 4 Dead. Set during the aftermath of an apocalyptic pandemic, Left 4 Dead 2 focuses on four new Survivors, fighting against hordes of the Infected, who develop severe psychosis and exhibit zombie-like tendencies. The Survivors must fight their w...
Today's Top Maps
5 Maps Co-Op Campaign
[The Lockdown campaign] The virus outbreak holds a death grip on the United ... More >
Updated 01/22/21
Uploader Mindplay

Rating
2 Deathcraft II
6 Maps Co-Op Campaign
2.1 released, hopefully there's no more broken or missing models. As the last... More >
Updated 11/05/12
Uploader rtsdeathreaper

Rating
3 Block2 【方块2】
5 Maps Co-Op Campaign
Diamond finally ushered in its sequel, like tank's little partner don't miss ... More >
Updated 01/20/21
Uploader chenchen2
Author 晨晨

Rating
4 Ruins (v2)
4 Maps Campaign
Travel through the city of ruins where everything is dead. IMPORTANT NOTE: -... More >
Updated 01/18/21
Uploader Kryogen
Author Kryogen

Rating
5 Back to school
6 Maps Co-Op Versus Campaign
The storyline offer new setting of Borden city, struggling to survive in an e... More >
Updated 01/19/13
Uploader romasm

Rating
6 Haunted Forest
4 Maps Co-Op Versus Campaign
Reuploaded December 2020. Yes, that means I'm going to work on the stuff that... More >
Updated 12/19/20
Uploader Dr.Boo.j2
Author Dr.Boo

Rating
7 Whispers of Winter
5 Maps Co-Op Survival Versus
This will be my Final Left 4 Dead 2 mod Whispers of Winter is a 5 map campaig... More >
Updated 01/02/21
Uploader Okay_
Author Okay!

Rating
8 Fatal Freight: Remastered
5 Maps Co-Op Survival Versus
"They're on a one-way trip.... to HELL!!" VERSION: 1.7 (changelog below) SU... More >
Updated 12/15/20
Uploader Tamari
Author Tamari

Rating
9 Resident Evil 3
7 Maps Co-Op Survival Versus
Things you have to know: -I changed the name (Raccoon City Nemesis) to avoi... More >
Updated 11/26/20
Uploader Rodry_metal
Author Roku

Rating
10 Beyond Dead
5 Maps Co-Op Versus Campaign
-Welcome to Deadsville- (Pro log) They thought they had escaped once they bo... More >
Updated 01/16/21
Uploader DarthDed
Author Evil

Rating
Popular Content (Today)
5 Maps Co-Op Campaign
[The Lockdown campaign] The virus outbreak holds a death grip on the United ... More >
Updated 01/22/21
Uploader Mindplay

Rating
2 Deathcraft II
6 Maps Co-Op Campaign
2.1 released, hopefully there's no more broken or missing models. As the last... More >
Updated 11/05/12
Uploader rtsdeathreaper

Rating
3 Block2 【方块2】
5 Maps Co-Op Campaign
Diamond finally ushered in its sequel, like tank's little partner don't miss ... More >
Updated 01/20/21
Uploader chenchen2
Author 晨晨

Rating
4 Ruins (v2)
4 Maps Campaign
Travel through the city of ruins where everything is dead. IMPORTANT NOTE: -... More >
Updated 01/18/21
Uploader Kryogen
Author Kryogen

Rating
5 Back to school
6 Maps Co-Op Versus Campaign
The storyline offer new setting of Borden city, struggling to survive in an e... More >
Updated 01/19/13
Uploader romasm

Rating
6 Haunted Forest
4 Maps Co-Op Versus Campaign
Reuploaded December 2020. Yes, that means I'm going to work on the stuff that... More >
Updated 12/19/20
Uploader Dr.Boo.j2
Author Dr.Boo

Rating
7 Whispers of Winter
5 Maps Co-Op Survival Versus
This will be my Final Left 4 Dead 2 mod Whispers of Winter is a 5 map campaig... More >
Updated 01/02/21
Uploader Okay_
Author Okay!

Rating
8 Merciless Survivor Bots
Scripts
This time, I took some experiments by improving bot's aim ability, and...... ... More >
Updated 01/15/21
Uploader kurochama
Author kurochama

Rating
9 Fatal Freight: Remastered
5 Maps Co-Op Survival Versus
"They're on a one-way trip.... to HELL!!" VERSION: 1.7 (changelog below) SU... More >
Updated 12/15/20
Uploader Tamari
Author Tamari

Rating
10 Resident Evil 3
7 Maps Co-Op Survival Versus
Things you have to know: -I changed the name (Raccoon City Nemesis) to avoi... More >
Updated 11/26/20
Uploader Rodry_metal
Author Roku

Rating
Popular Content (Monthly)
6 Maps Co-Op Campaign
2.1 released, hopefully there's no more broken or missing models. As the last... More >
Updated 11/05/12
Uploader rtsdeathreaper

Rating
2 Haunted Forest
4 Maps Co-Op Versus Campaign
Reuploaded December 2020. Yes, that means I'm going to work on the stuff that... More >
Updated 12/19/20
Uploader Dr.Boo.j2
Author Dr.Boo

Rating
3 Whispers of Winter
5 Maps Co-Op Survival Versus
This will be my Final Left 4 Dead 2 mod Whispers of Winter is a 5 map campaig... More >
Updated 01/02/21
Uploader Okay_
Author Okay!

Rating
4 Lockdown DLC
5 Maps Co-Op Campaign
[The Lockdown campaign] The virus outbreak holds a death grip on the United ... More >
Updated 01/22/21
Uploader Mindplay

Rating
5 Road to Deep part 1
5 Maps Co-Op Versus Campaign
The same deepp style of the new Xtreme, currently do 2, after the level will ... More >
Updated 12/16/20
Uploader DarthDed
Author Taiga Aisaka

Rating
6 Fatal Freight: Remastered
5 Maps Co-Op Survival Versus
"They're on a one-way trip.... to HELL!!" VERSION: 1.7 (changelog below) SU... More >
Updated 12/15/20
Uploader Tamari
Author Tamari

Rating
7 Ruins (v2)
4 Maps Campaign
Travel through the city of ruins where everything is dead. IMPORTANT NOTE: -... More >
Updated 01/18/21
Uploader Kryogen
Author Kryogen

Rating
8 Back to school
6 Maps Co-Op Versus Campaign
The storyline offer new setting of Borden city, struggling to survive in an e... More >
Updated 01/19/13
Uploader romasm

Rating
9 Left 4 Bots (Improved A.I.)
Scripts
This addon improves the survivor bots behavior to make them more human-like a... More >
Updated 01/05/21
Uploader Goben
Author Goben

Rating
10 Resident Evil 3
7 Maps Co-Op Survival Versus
Things you have to know: -I changed the name (Raccoon City Nemesis) to avoi... More >
Updated 11/26/20
Uploader Rodry_metal
Author Roku

Rating
Symbyosys v12 Left 4 Dead 2
Uploader: emilio3
Author: Emilio3
THIS IS THE LAST OFICIAL FROM ME Emilio3 the developer Symbyosys V12: is coming the new symbyosysfinal.vpk with one or two news maps. please not download the copy paste fuck symbyosysv13.vpk. thanks 
1ª: download addons vpk symbyosysv12 
2ª: download addons vpk symbyosystexturesfull vercion 0.3 fix textures misil launcher in map 4
see in changelog
play in my server 25 players supercoop
UKS Coop.25 (2.1.5.3)
connect 37.187.155.71:27025 
must download symbyosystexturesfull.vpk  not see in pink and black

If you would like to share your own revisions of this addon , please rename the files! I do not want to create confusion for end-users and it will avoid conflict and negative feedback on the official versions of my work. If you choose to keep the same file names for your revisions, it will cause users to assume that the official versions are the source of any problems your revisions may have. This is to protect you (the reviser) and me (the developer)! Thank you!
View Changelog (v12 Complete)
Updated: 08/07/14   •   Views: 381,877  •  symbyosysv12.zip (376MB)