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
v1 Full
Alien Swarm

v1 Full

Jul 4, 2014 Swarm Director 2 Full Version (952.82mb) 0 comments

The first release of Swarm Director 2! Adds navmesh support, several community campaigns, better marine AI, a more powerful AI director, and a new game...

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

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.

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...

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...

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

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.

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.

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...

Swarm Keeper 0.51 7z
Alien Swarm

Swarm Keeper 0.51 7z

Apr 13, 2013 Swarm Keeper Full Version (162.86mb) 1 comment

Minor bug fix release to resolve a potential crash for some users.

Swarm Keeper 0.50 7z
Alien Swarm

Swarm Keeper 0.50 7z

Apr 7, 2013 Swarm Keeper Full Version (180.22mb) 0 comments

New version of Swarm Keeper. Non explored parts of the map are now made full black, three new spells, selected blocks for digging are now glowing green...

Swarm Keeper 0.45 Beta EXE
Alien Swarm

Swarm Keeper 0.45 Beta EXE

Aug 26, 2012 Swarm Keeper Full Version (211.92mb) 0 comments

A minor update this time. This update makes it easier to create rooms, fixes several bugs and contains various optimizations.

Swarm Keeper 0.45 Beta ZIP
Alien Swarm

Swarm Keeper 0.45 Beta ZIP

Aug 26, 2012 Swarm Keeper Full Version (211.41mb) 0 comments

A minor update this time. This update makes it easier to create rooms, fixes several bugs and contains various optimizations.

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.

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 0.25
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 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.

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...

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 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...

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 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 - 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...

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...

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...

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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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