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.

  • View media
  • View media
  • View media
  • View media
  • View media
  • View media
Post article RSS Related Articles

Game Updates

News 3 comments

We have a new video update, bringing you the chat system, improvements to the build system and a map development cycle!

Be sure to check the Reddit or Facebook page for the full notes!

HYP 0.5 - Preview Update 01

HYP 0.5 - Preview Update 01

Hypovolemia 5 comments

Hypovolemia version 0.5 is approaching the inevitable release. Here's what we've been working and planning on!

Lambda Wars Update

Lambda Wars Update

Lambda Wars 16 comments

Last Wednesday we released our biggest update yet! This update includes three new units, two new buildings, many balance changes and improvements.

Happy Birthday, Swarm Director 2!

Happy Birthday, Swarm Director 2!

Swarm Director 2 3 comments

Has it been a year already? Let's look back at what we've accomplished so far.

May the Fourth be with you

May the Fourth be with you

Swarm Director 2 0 comments

v2 adds per-player first person, an even more powerful director, ASB2's spawn lists, player2k's Better HUD Mod, new entities, and bugfixes for several...

Add file RSS Related Files
Alien Swarm: Reactive Drop Launcher

Alien Swarm: Reactive Drop Launcher

Alien Swarm: Reactive Drop Installer Tool 0 comments

Allows users to easily install, update or delete Alien Swarm: Reactive Drop mod. It uses Subversion(SVN) to download and update the mod.

Rifle Mod Server DLL 2016.05.04

Rifle Mod Server DLL 2016.05.04

Alien Swarm: Rifle Mod Full Version 0 comments

Extract it into Alien Swarm\swarm\bin. Use console commands to activate game modes in each round. rm_mod 0 - classic Alien Swarm, rm_mod 5 - Solo Player...

Reactive Drop 1.19 Full

Reactive Drop 1.19 Full

Alien Swarm: Reactive Drop Full Version 1 comment

Full latest version. Delete old version. Extract to <path to steam>\SteamApps\sourcemods. Restart Steam. If you updated using patches there is no reason...

Reactive Drop 1.17 to 1.19 Patch 2

Reactive Drop 1.17 to 1.19 Patch 2

Alien Swarm: Reactive Drop Patch 0 comments

This patch adds Silent Corridors campaign and resolves issues with Antlion Guard. Requires 1.17 or higher version installed. Extract this archive into...

silenced weapons (vpk file)

silenced weapons (vpk file)

Alien Swarm:Silencer Mod Full Version 0 comments

Thanks for Geotavros' help, the vpk version is released.

Reality Arms MOD

Reality Arms MOD

Reality Arms MOD Full Version 2 comments

Here is the download, enjoy it! To install it please read Help.txt in the pack.

Comments  (0 - 10 of 180)
TheFinalSeeker
TheFinalSeeker

A Time Splitter mod for this uhh mod would be so good

Reply Good karma Bad karma+1 vote
nando259
nando259

Man, I need to download and play this game :)

Reply Good karma Bad karma+1 vote
Guest
Guest

It's free on Steam.

Reply Good karma Bad karma+2 votes
kakkin
kakkin

Como diablos pongo Desura en EspaƱol????? How do you go again Desura in Spanish???

Reply Good karma Bad karma-1 votes
EASTEDERD
EASTEDERD

This game was fun to play when you have four friends who also like it.

Reply Good karma Bad karma+2 votes
babyman1
babyman1

you guys can get this game on steam for free

Reply Good karma Bad karma+4 votes
PurpleGaga27
PurpleGaga27

(buried)

Team Fortress 2 is now Valve's best free game ever over this Alien Swarm game.

Reply Good karma Bad karma-22 votes
defragen1
defragen1

tf2 is todays power rangers

Reply Good karma Bad karma0 votes
SIR_halyavshik
SIR_halyavshik

Alien Swarm is made by fans

Reply Good karma Bad karma+17 votes
azultain
azultain

Xfire.com

Gameplay of Alien Swarm

Reply Good karma Bad karma0 votes
Post a comment
Sign in or join with:

Only registered members can share their thoughts. So come on! Join the community today (totally free - or sign in with your social account on the right) and join in the conversation.

Follow Report Profile
Icon
Alien Swarm
Platforms
Windows
Developer & Publisher
Valve
Engine
Source
Contact
Send Message
Homepage
Alienswarm.com
Release date
Game watch
Follow
Share
Purchase
Community Rating

Average

9.3

354 votes submitted.

You Say

-

Ratings closed.

Highest Rated (4 agree) 10/10

for a free game, this is one incredibly fun sci-fi creation, building on steam's co-op capabilities, which gives it immersive replay value, making it an awesome return-back platform for general cooperative-skills practice with new gamers and relaxing eye-hand coordination training gamers usually seek. given its free access to the game's sdk, enriches the experience even further, adding various creative production of new game content based on valve's source engine. what would u need more from a top-down…

Jun 6 2011 by goodone

Style
Genre
Arcade
Theme
Sci-Fi
Project
AAA
Boxart
Boxart
Embed Buttons
Link to Alien Swarm by selecting a button and using the embed code provided more...
Alien Swarm
Statistics
Last Update
Watchers
592 members
Mods
43
Addons
60
Files
107
Articles
101
Reviews
25