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.

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Added | Game Name | Type
Alien Swarm Campaign BETA

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: The Spaceship

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

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.

Source Sauce

Source Sauce

Apr 19, 2011 Plugin (0.25mb) 26 comments

A simple Out-Of-Game Tool that let's you set options for multiple Source Games at once, and even let's you set options that are not normally available...

Source Multi-Tool 1.0

Source Multi-Tool 1.0

Nov 23, 2013 Mapping Tool (0.91mb) 5 comments

I've been working away at this for quite awhile now and after many revisions I'm happy to release version 1.0 of the new Source Multi-Tool. Source Multi-Tool...

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Half-Life 2: Wars v0.5 EXE
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Half-Life 2: Wars v0.5 EXE

Jul 10, 2008 Lambda Wars Full Version (126.74mb) 57 comments

EXE version of the 0.5 release of Half-Life 2: Wars. Please ensure you have uninstalled any previous versions of HL2:Wars before running it.

Half-Life 2: Wars Beta 0.5 SOURCE CODE
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Half-Life 2: Wars Beta 0.5 SOURCE CODE

Mar 22, 2010 Lambda Wars Source Code (36.29mb) 9 comments

This is the source code for HLW v0.5, our July 2008 public beta release. The game executable is not included, only the modification's raw source files...

Alpha Version: 0.2
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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...

The Darkness Beta 0.35
Alien Swarm

The Darkness Beta 0.35

Aug 30, 2010 Alien Swarm: The Darkness Other (18.45mb) 2 comments

The Darkness Beta 0.35 Installation Media Download this Self Extracting Archive to Install.

Swarm Tactics 0.5 Readme
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Sep 23, 2010 Alien Swarm: The Darkness Tutorials (0.00mb) 2 comments

SwarmTactics 0.5 readme (also includes The Darkness 0.5 in this version)

Swarm Tactics 0.5 7z Download
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Swarm Tactics 0.5 7z Download

Sep 23, 2010 Alien Swarm: The Darkness Other (43.84mb) 0 comments

Swarm Tactics 0.5 7z Download: The readme file is also available for download in the Downloads section.

Swarm Tactics 0.5 Zip Download:
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Swarm Tactics 0.5 Zip Download:

Sep 23, 2010 Alien Swarm: The Darkness Other (65.48mb) 0 comments

Swarm Tactics 0.5 Zip Download: The readme file can be found in the downloads section.

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...

Half-Life 2: Wars Beta 1.0.3 ZIP
Alien Swarm

Half-Life 2: Wars Beta 1.0.3 ZIP

Mar 7, 2011 Lambda Wars Full Version (193.10mb) 4 comments

ZIP version of the client installer for the Beta 1.0.3 of HL2: Wars.

Half-Life 2: Wars Beta 1.0.3 FULL - Client EXE
Alien Swarm

Half-Life 2: Wars Beta 1.0.3 FULL - Client EXE

Mar 7, 2011 Lambda Wars Full Version (196.02mb) 20 comments

EXE installer for the Half-Life 2: Wars Beta 1.0.3 client.

Half-Life 2: Wars Beta 1.0.4 PATCH ZIP
Alien Swarm

Half-Life 2: Wars Beta 1.0.4 PATCH ZIP

Mar 12, 2011 Lambda Wars Patch (17.20mb) 4 comments

ZIP version of the client installer for the Beta 1.0.4 PATCH of HL2: Wars.

Half-Life 2: Wars Beta 1.0.4 PATCH EXE
Alien Swarm

Half-Life 2: Wars Beta 1.0.4 PATCH EXE

Mar 12, 2011 Lambda Wars Patch (17.77mb) 13 comments

EXE version of the client installer for the Beta 1.0.4 PATCH of HL2: Wars.

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....

Bloodlines Resurgence Demo Installer 1.0.1.4
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Bloodlines Resurgence Demo Installer 1.0.1.4

Apr 5, 2011 Bloodlines Resurgence Demo (61.89mb) 6 comments

This installer converts your original version of the game into the latest Source engine with various working maps as demonstration of the mod. The installer...

Brawl Busters
Alien Swarm

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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...

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...

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...

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!

ASDK - SourceMod Files (Alpha)
Alien Swarm

ASDK - SourceMod Files (Alpha)

Mar 17, 2012 Alien Swarm SDK Template Conversion Full Version (45.30mb) 2 comments

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...

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...

Hypovolemia 0.1 Alpha
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Hypovolemia 0.1 Alpha

May 16, 2012 Hypovolemia 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

Swarm Keeper Alpha 0.1
Alien Swarm

Swarm Keeper Alpha 0.1

Jun 4, 2012 Swarm Keeper Demo (186.63mb) 1 comment

Swarm Keeper is a Dungeon Keeper inspired modification for Alien Swarm.

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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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