Alien Swarm
Alien Swarm is a game and Source SDK release from a group of talented designers at Valve who were hired from the Mod community. Available free of charge, the game thrusts players into an epic bug hunt featuring a unique blend of co-op play and squad-level tactics. With your friends, form a squad of four distinct IAF Marine classes. Plan your ...
Today's Top Maps
Holdout
A quick survival map I created...and yes, it was significantly edited from it... More >
Updated 09/26/14
Author Echo

Rating
2 Outpost 5
Co-Op
This is a Tilegen but I tried to add enough detail and change it up enough to... More >
Updated 09/26/14
Author larrybrains

Rating
3 Holdout_pr
Holdout
Holdout Hi all. New version is 1.9 Added Briefing map. Added wind sound. Adde... More >
Updated 09/26/14
Author Proker

Rating
4 Tears for Tarnor
3 Maps Co-Op Campaign
Welcome to the harsh planet of Tarnor. A nearly airless rock circling an anci... More >
Updated 09/29/14
Author Ezekel

Rating
5 Dead City
Co-Op
An epic bug hunt featuring a unique blend of co-op play and squad-level tacti... More >
Updated 03/06/14
Author Daniel101

Rating
6 Extermination
7 Maps Co-Op Campaign
Extermination is a campaign which unites these maps: Midnight harvest 1 Midni... More >
Updated 03/14/14
Author geotavros

Rating
7 Lost Cause
Holdout
Hold off against the swarm in this survival map. You have to keep alive for a... More >
Updated 09/26/14
Author daniel10166

Rating
8 survival_outpost_snow
Holdout
This is a survival map You have to hold out in an outpost for 10 minutes and ... More >
Updated 09/26/14
Author Asus

Rating
9 SurvivalArena
Holdout
This is a survival map, where our place is the arena of battle. Our job is to... More >
Updated 09/29/14

Rating
10 The Titanic
Co-Op
Escape from the famous ship: THE TITANIC This is my first map which I upload... More >
Updated 09/29/14
Author Alexman24

Rating
Popular Content (Today)
Holdout
A quick survival map I created...and yes, it was significantly edited from it... More >
Updated 09/26/14
Author Echo

Rating
2 Outpost 5
Co-Op
This is a Tilegen but I tried to add enough detail and change it up enough to... More >
Updated 09/26/14
Author larrybrains

Rating
3 Nepumax' Colorful Marines
Marines
This pack includes recolored marine skins for Alien Swarm. * INSTALL INSTRUC... More >
Updated 09/26/14
Author Nepumax

Rating
4 Dead City
Co-Op
An epic bug hunt featuring a unique blend of co-op play and squad-level tacti... More >
Updated 03/06/14
Author Daniel101

Rating
5 Extermination
7 Maps Co-Op Campaign
Extermination is a campaign which unites these maps: Midnight harvest 1 Midni... More >
Updated 03/14/14
Author geotavros

Rating
6 Holdout_pr
Holdout
Holdout Hi all. New version is 1.9 Added Briefing map. Added wind sound. Adde... More >
Updated 09/26/14
Author Proker

Rating
7 Tears for Tarnor
3 Maps Co-Op Campaign
Welcome to the harsh planet of Tarnor. A nearly airless rock circling an anci... More >
Updated 09/29/14
Author Ezekel

Rating
8 Cold Catwalks
Co-Op
An alien swarm map for everyone to enjoy! Hope you like it. More >
Updated 03/05/14
Author hemuuuli

Rating
9 The Dead Temple
5 Maps Co-Op Campaign
There are five missions in this Campaign. All the missions have specific obj... More >
Updated 09/26/14
Author Xacktar

Rating
10 Lost Cause
Holdout
Hold off against the swarm in this survival map. You have to keep alive for a... More >
Updated 09/26/14
Author daniel10166

Rating
Popular Content (Monthly)
7 Maps Co-Op Campaign
Extermination is a campaign which unites these maps: Midnight harvest 1 Midni... More >
Updated 03/14/14
Author geotavros

Rating
2 The Dead Temple
5 Maps Co-Op Campaign
There are five missions in this Campaign. All the missions have specific obj... More >
Updated 09/26/14
Author Xacktar

Rating
3 Dead City
Co-Op
An epic bug hunt featuring a unique blend of co-op play and squad-level tacti... More >
Updated 03/06/14
Author Daniel101

Rating
4 Tears for Tarnor
3 Maps Co-Op Campaign
Welcome to the harsh planet of Tarnor. A nearly airless rock circling an anci... More >
Updated 09/29/14
Author Ezekel

Rating
5 Nepumax' Colorful Marines
Marines
This pack includes recolored marine skins for Alien Swarm. * INSTALL INSTRUC... More >
Updated 09/26/14
Author Nepumax

Rating
6 Holdout
Holdout
A quick survival map I created...and yes, it was significantly edited from it... More >
Updated 09/26/14
Author Echo

Rating
7 Holdout_pr
Holdout
Holdout Hi all. New version is 1.9 Added Briefing map. Added wind sound. Adde... More >
Updated 09/26/14
Author Proker

Rating
8 survival_outpost_snow
Holdout
This is a survival map You have to hold out in an outpost for 10 minutes and ... More >
Updated 09/26/14
Author Asus

Rating
9 Outpost 5
Co-Op
This is a Tilegen but I tried to add enough detail and change it up enough to... More >
Updated 09/26/14
Author larrybrains

Rating
10 Drone Lab
Co-Op
This map/campaign is in the early stages, and I thought that I should release... More >
Updated 03/06/14
Author XionOfChaos

Rating
Cold Catwalks Alien Swarm
An alien swarm map for everyone to enjoy!  Hope you like it.
View Changelog (v1.0 Beta)
Updated: 03/05/14   •   Views: 4,710  •  coldcatwalksbeta1.zip (23MB)