Alien Swarm
Alien Swarm is a freeware top-down shooter video game by Valve Corporation.
Popular Time of day Maps
Holdout
Holdout Hi all. New version is 1.9 Added Briefing map. Added wind sound. Adde... More >
Updated 09/26/14
Author Proker

Rating
2 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
3 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
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 Ground Zero
2 Maps Co-Op Campaign
Your mission was to find and destroy a secret alien lab. Now you have crash l... More >
Updated 09/30/14
Author BioHazard

Rating
Popular Content (Today)
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 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
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 Ground Zero
2 Maps Co-Op Campaign
Your mission was to find and destroy a secret alien lab. Now you have crash l... More >
Updated 09/30/14
Author BioHazard

Rating
5 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
6 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
7 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
8 robot-1
Marines
1_ Extract the .ZIP file. 2_ Move the robot-1.vpk file to ":\Program files\St... More >
Updated 09/26/14
Author lucas rojas

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

Rating
10 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
Popular Content (Monthly)
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
2 Ground Zero
2 Maps Co-Op Campaign
Your mission was to find and destroy a secret alien lab. Now you have crash l... More >
Updated 09/30/14
Author BioHazard

Rating
3 Cold Catwalks
Co-Op
An alien swarm map for everyone to enjoy! Hope you like it. More >
Updated 03/06/14
Author hemuuuli

Rating
4 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
5 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
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 Holdout
Holdout
A quick survival map I created...and yes, it was significantly edited from it... More >
Updated 09/26/14
Author Echo

Rating
8 robot-1
Marines
1_ Extract the .ZIP file. 2_ Move the robot-1.vpk file to ":\Program files\St... More >
Updated 09/26/14
Author lucas rojas

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

Rating
Time of day
2 Maps
2 Maps Co-Op Campaign
Your mission was to find and destroy a secret alien lab. Now you have crash l... More >
Updated 09/30/14
Author BioHazard

Rating
Your mission was to find and destroy a secret alien lab. Now you have crash landed and are stranded in an infested forest. Find your way to the underground entrance and complete your mission. Be sure you read any hints on the screen and pay attention to the areas around you. Check computers, look for keys, and conserve your gear, you're going to need it.
2 Maps
2 Maps Co-Op Campaign
Your mission was to find and destroy a secret alien lab. Now you have crash l... More >
Updated 09/30/14
Author BioHazard

Rating
3 Maps
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
Welcome to the harsh planet of Tarnor. A nearly airless rock circling an ancient Red Giant, the planet is subject to baking heat in the day and freezing colds at night. Despite the unforgiving nature of the planet, the bustling colony of Oasis thrives on the surface as a major trading hub. It's often been said that whatever you need you can find it at Oasis, for a price. However, the colony has...
3 Maps
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
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
Escape from the famous ship: THE TITANIC This is my first map which I upload (not the first I created) and it includes: custom textures scripted sequences An easter egg And a lot more to discover...
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
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
This is a survival map You have to hold out in an outpost for 10 minutes and then an airship comes to save you. This is my first Alien Swarm map I hope you like it. How to install: Extract the .vpk file to: C:\Program Files\Steam\steamapps\common\alien swarm\swarm\addons Edit: How to play custom maps: type "map survival_outpost_snow" for a singleplayer server in the console and it sh...
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
Holdout
Holdout Hi all. New version is 1.9 Added Briefing map. Added wind sound. Adde... More >
Updated 09/26/14
Author Proker

Rating
Holdout Hi all. New version is 1.9 Added Briefing map. Added wind sound. Added new decals. Added new models. Fixed some bugs (thx to airsoft343 and his friends) Map has 20 waves. Good Luck.
Holdout
Holdout Hi all. New version is 1.9 Added Briefing map. Added wind sound. Adde... More >
Updated 09/26/14
Author Proker

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

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Co-Op
Escape from the famous ship: THE TITANIC This is my first map which I upload... More >
Updated 09/29/14
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2 Maps Co-Op Campaign
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Holdout
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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

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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
2 Maps
2 Maps Co-Op Campaign
Your mission was to find and destroy a secret alien lab. Now you have crash l... More >
Updated 09/30/14
Author BioHazard

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

Rating
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
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