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 attack using an unlockable arsenal of weapons with countless loadout configurations against a wide variety of aliens. Blaze your way through an overrun, off-world colony, eradicating the alien infestation in environments ranging from the icy planet's surface, to a subterranean lava-flooded mining facility.

(browse maps & skins)
Added | Game Name | Type
Alien Swarm Aliens Mod 0.9
Alien Swarm

Alien Swarm Aliens Mod 0.9

Nov 1, 2010 Alien Swarm Aliens Mod Demo (5.45mb) 8 comments

this includes: 4 weapon sounds, smartgun, pulse rifle, desert eagle, smg. motion tracker. swarms now sound exactly like xenomorphs. makes almost ALL of...

Alien Swarm Campaign BETA
Game

Alien Swarm Campaign BETA

Aug 2, 2010 Demo (20.34mb) 9 comments

A beta of my Alien Swarm campaign, Housle cleaning. Please list bugs in comments. TO INSTALL: go to your alien swarm folder and drop the unzipped file...

Alien Swarm Director Mod - Beta 0.1
Alien Swarm

Alien Swarm Director Mod - Beta 0.1

Oct 3, 2011 Alien Swarm Director Mod Full Version (19.64mb) 0 comments

This is a public beta for ASDM! Please note: in order to play you must have both the Alien Swarm AND Alien Swarm - SDK installed. Both are free on steam...

Alien Swarm Director Mod - Beta 0.2
Alien Swarm

Alien Swarm Director Mod - Beta 0.2

Oct 12, 2011 Alien Swarm Director Mod Full Version (28.17mb) 1 comment

This is version 0.2 public beta for ASDM! This version fixes several problems with doors and adds a new room. Additionally, level generation has been...

Alien Swarm Director Mod - Full Release v 1.0
Alien Swarm

Alien Swarm Director Mod - Full Release v 1.0

Nov 3, 2011 Alien Swarm Director Mod Full Version (26.88mb) 8 comments

Alien Swarm Director Mod full release 1.0! 5 mission campaign with 4 missions built dynamically for ultimate replayability! And ASDM responds to player...

Alien Swarm: The Spaceship
Game

Alien Swarm: The Spaceship

Aug 13, 2010 Full Version (1.82mb) 7 comments

A map I have released. I really do hope you enjoy this as much as I have made it.

Alien Swarm: The Spaceship map 2
Game

Alien Swarm: The Spaceship map 2

Aug 14, 2010 Full Version (0.02mb) 7 comments

The second map to The Spaceship. I am thinking of doing a mod using Alien Swarm. I'll think about it. So far I am making maps for pure enjoyment.

Alpha Version: 0.2
Alien Swarm

Alpha Version: 0.2

Jul 20, 2010 Infested Office Full Version (3.30mb) 1 comment

The first map of the map pack! Double click the unzipped file to install the addon, then make sure to enable it in game in the settings menu and you are...

AS:SP V Beta 0.3
Alien Swarm

AS:SP V Beta 0.3

Mar 17, 2011 Alien Swarm:SP Full Version (15.25mb) 4 comments

This is version 0.3 beta of Alien Swarm SP. Blah blah blah....

ASDK - SourceMod Files (Alpha)
Alien Swarm

ASDK - SourceMod Files (Alpha)

Mar 17, 2012 Alien Swarm SDK Template Conversion Full Version (45.30mb) 1 comment

The files you need for SourceMods directory in order to make your game use the ASDK source code. This basically is Alpha because it's ripped directly...

ASDK Version 1.0
Alien Swarm

ASDK Version 1.0

Mar 14, 2012 Alien Swarm SDK Template Conversion Full Version (243.83mb) 1 comment

The latest version of the ASDK. This features ALL from the SDK Template inside Alien Swarm, to re-define what you need; simple edit the shareddef's file!

Brawl Busters
Alien Swarm

Brawl Busters

Sep 13, 2011 Brawlers Full Version (238.09mb) 4 comments

Brawl Busters, an online multiplayer action combat game, brings a brand new free-to-play experience to PC gamers from all over the world. Featuring innovative...

Brawl Busters Open Beta client
Alien Swarm

Brawl Busters Open Beta client

Nov 14, 2011 Brawlers Full Version (268.38mb) 3 comments

The game update features two new modes, all new weapons and cool, never-before-seen outfits. The website will also receive an update that will allow players...

Chaos Swarm Marines
Alien Swarm

Chaos Swarm Marines

May 29, 2015 Chaos Swarm Marines Full Version (30.75mb) 0 comments

There new mod chaos swarm marines, revision 7.3

Chaos Swarm Marines Red Edition
Alien Swarm

Chaos Swarm Marines Red Edition

May 29, 2015 Chaos Swarm Marines Full Version (26.73mb) 0 comments

There new custom mod red edition special for chaos swarm marines and moddb, revision 7.3

Hypovolemia 0.1 Alpha
Alien Swarm

Hypovolemia 0.1 Alpha

May 16, 2012 Occult Scrim Full Version (367.52mb) 10 comments

Hypovolemia 0.1 Alpha has been released! Come and get it! EDIT: 12/8/2013 this verison no longer works, don't download it

IAF Weapon Drop v1.1
Alien Swarm

IAF Weapon Drop v1.1

Mar 29, 2012 IAF Weapon Drop Full Version (0.42mb) 3 comments

First public version of mod- packed in zip. Contain VPK with mod files and more detailed changelog. IMPORTANT- REMEMBER IF YOU WANT TO PLAY WITH OTHERS...

Lambda Wars 2.3.6 FULL 7z
Alien Swarm

Lambda Wars 2.3.6 FULL 7z

Jun 9, 2014 Lambda Wars Full Version (1,071.11mb) 2 comments

Install Instructions: 1. Extract contents into your sourcemods folder (default location: C:\Program Files (x86)\steam\steamapps\sourcemods). 2. Restart...

Lambda Wars 2.3.6 FULL EXE
Alien Swarm

Lambda Wars 2.3.6 FULL EXE

Jun 9, 2014 Lambda Wars Full Version (1,080.22mb) 14 comments

The newest version you can now get directly on steam, completely free, no other games needed. Install Instructions: 1. Run the Installer and follow the...

Outer Heaven Mercenaries wallpaper
Alien Swarm

Outer Heaven Mercenaries wallpaper

May 9, 2014 Metal Gear Remake Wallpapers (1.07mb) 0 comments

A wallpaper made by our modeler/2d artist for our upcoming mod.

Patch 1.04 to 1.07
Alien Swarm

Patch 1.04 to 1.07

Apr 16, 2014 Alien Swarm: Reactive Drop Patch (68.37mb) 0 comments

Extract archive into sourcemods. Requires 1.04 or higher version installed.

Patch 1.07 to 1.08
Alien Swarm

Patch 1.07 to 1.08

May 23, 2014 Alien Swarm: Reactive Drop Patch (19.87mb) 2 comments

Extract this into sourcemods. Requires version 1.07 installed

Patch 1.08 to 1.09
Alien Swarm

Patch 1.08 to 1.09

Jun 21, 2014 Alien Swarm: Reactive Drop Patch (3.84mb) 0 comments

Extract this patch on top of 1.08 version. Added support for 7 bot marines. Added displaying of 7 marines in lobby screen.

Reactive Drop 1.04
Alien Swarm

Reactive Drop 1.04

Apr 9, 2014 Alien Swarm: Reactive Drop Full Version (1,046.10mb) 2 comments

Full version. Extract archive into sourcemods. Core features are 8 players support, Rifle Mod features, PvP game modes.

Reactive Drop 1.09
Alien Swarm

Reactive Drop 1.09

Jun 21, 2014 Alien Swarm: Reactive Drop Full Version (1,097.14mb) 1 comment

Full 1.09 version. Recommended for those who didn't have Reactive Drop installed. Extract to <path to steam>\SteamApps\sourcemods. Restart Steam

Reactive Drop 1.10
Alien Swarm

Reactive Drop 1.10

Oct 8, 2014 Alien Swarm: Reactive Drop Full Version (1,105.73mb) 0 comments

New weapons, bug fixes, map fixes, jump_jet_trigger for mappers etc. Extract to <path to steam>\SteamApps\sourcemods. Restart Steam

Reactive Drop 1.11
Alien Swarm

Reactive Drop 1.11

Jan 5, 2015 Alien Swarm: Reactive Drop Full Version (1,126.48mb) 0 comments

Misc fixes, performance optimization and weapon balancing. Extract to <path to steam>\SteamApps\sourcemods. Restart Steam

Reactive Drop 1.11 to 1.12 Patch
Alien Swarm

Reactive Drop 1.11 to 1.12 Patch

Feb 17, 2015 Alien Swarm: Reactive Drop Patch (126.85mb) 1 comment

Extract this into sourcemods folder. Requires version 1.11 installed. See changelog at homepage

Reactive Drop 1.13
Alien Swarm

Reactive Drop 1.13

Mar 21, 2015 Alien Swarm: Reactive Drop Full Version (735.10mb) 0 comments

Misc fixes, weapon balancing for pvp, see changelog. Delete old version. Extract to <path to steam>\SteamApps\sourcemods. Restart Steam

Reactive Drop 1.13 to 1.14 Patch
Alien Swarm

Reactive Drop 1.13 to 1.14 Patch

Apr 5, 2015 Alien Swarm: Reactive Drop Patch (3.69mb) 0 comments

Requires version 1.13 installed. Extract to <path to steam>\SteamApps\sourcemods. Restart Steam

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Alien Swarm
Platform
Windows
Developer & Publisher
Valve
Engine
Source
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Official Page
Alienswarm.com
Release Date
Released Jul 2010
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Size
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Downloads
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