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 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
Alien Swarm

Alien Swarm Campaign BETA

Aug 2, 2010 Alien Swarm 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) 7 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
Alien Swarm

Alien Swarm: The Spaceship

Aug 13, 2010 Alien Swarm 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

Alien Swarm: The Spaceship map 2

Aug 14, 2010 Alien Swarm 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) 3 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...

Hypovolemia 0.1 Alpha
Alien Swarm

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

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) 1 comment

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) 8 comments

Install Instructions: 1. Run the Installer and follow the instructions. 2. Restart steam. 3. "Lambda Wars" should now appear in your games list. If you...

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) 0 comments

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

Rifle Mod Server
Alien Swarm

Rifle Mod Server

Apr 4, 2014 Alien Swarm: Rifle Mod Full Version (2.00mb) 0 comments

A number of fixes and features were added into Rifle Mod. You can now play the original Alien Swarm by typing rm_challenge 0 in console. You also can...

Source Multi-Tool 1.0
Half-Life 2

Source Multi-Tool 1.0

Nov 23, 2013 Garrys Mod Mapping Tool (0.91mb) 4 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...

Source Sauce
Half-Life 2

Source Sauce

Apr 19, 2011 Garrys Mod 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...

Swarm Keeper 0.25
Alien Swarm

Swarm Keeper 0.25

Jun 10, 2012 Swarm Keeper Demo (182.38mb) 0 comments

Swarm Keeper 0.25 - a Dungeon Keeper inspired Source Engine mod for Alien Swarm.

Swarm Keeper 0.30
Alien Swarm

Swarm Keeper 0.30

Jun 25, 2012 Swarm Keeper Demo (145.16mb) 0 comments

Minor bug fix release. Fixes randomly broken animations and moves dropping items/creatures to the right mouse button.

Swarm Keeper 0.40 Beta EXE
Alien Swarm

Swarm Keeper 0.40 Beta EXE

Jul 2, 2012 Swarm Keeper Demo (138.61mb) 0 comments

This release introduces a new HTML based UI and some major performance improvements for larger maps and dungeons.

Swarm Keeper 0.40 Beta ZIP
Alien Swarm

Swarm Keeper 0.40 Beta ZIP

Jul 2, 2012 Swarm Keeper Demo (138.36mb) 0 comments

This release introduces a new HTML based UI and some major performance improvements for larger maps and dungeons.

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Alien Swarm
Platform
Windows
Developer & Publisher
Valve
Engine
Source
Contact
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Official Page
Alienswarm.com
Release Date
Released Jul 18, 2010
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Size
8.12gb
Downloads
26,979
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