Alien Swarm is an overhead view tactical squad-based shooter for UT2K4. Set in the the distant future, the players take the role of a Commander in the Interstellar Armed Forces. They must guide their squad of marines through Swarm infested colonies, overrun bases and outposts, to achieve a variety of objectives.

Alien Swarm features:

  • Unique blend of action and strategy.
  • 1-8 players co-operative play.
  • Single mission or Campaign mode.
  • Large array of equipment for your marines, including Assault rifles, Shotguns, SynTek SmartEye Autoguns, Flamethrowers, Pistols, Incendiary Mines, Flares, Stim Packs, Ammo Bags, Sentry Guns, Medkits and more!
  • Four marine classes: Explosives, Special Weapons, Medic and Technical
  • Skill and experience system allowing your marines to improve as they progress through the campaign.

  • Full tutorial to teach you how to play and to use the equipment at your disposal.
  • 8 unique marines with portaits, personality, skills and background.
  • Easy to use emote system for team communication.
  • Full character speech for each marine which adapts to the current situation.
  • Alien parasites which infest your marines and hatch from inside them.
  • A variety of mission objectives.
  • High scores, kill records and medals.
  • A range of difficulty settings and unlockable map variations.
  • Leader and voting system for online play.
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Blog RSS Feed Report abuse Latest News: Alien Swarm: Phalanx Campaign

0 comments by Dalai on Jul 1st, 2005

MjrHuRTz has just released the Phalanx Campaign for Alien Swarm! Alien Swarm is a co-operative squad-based tactical shooter from Black Cat Games, built on top of UT2004. The Phalanx Campaign gives you 6 new missions, ranging from a Greenhouse facility to heavily infested living quarters.

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Head on over to the Alien Swarm site for more details and screenshots!

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AlienSwarm 1.3 to 1.34 Patch zip

AlienSwarm 1.3 to 1.34 Patch zip

Apr 2, 2011 Patch 0 comments

Alien Swarm 1.34 Patch 31st January 2010 Here's a small patch which adds widescreen support to Alien Swarm: * Widescreen resolutions available in the...

Alien Swarm v1.32 Patch

Alien Swarm v1.32 Patch

Oct 27, 2009 Full Version 0 comments

This patch requires Alien Swarm 1.3 or 1.31 to already be installed. To upgrade, extract this patch .zip to your UT2004 folder.

Alien Swarm v1.3

Alien Swarm v1.3

Oct 27, 2009 Full Version 2 comments

Alien Swarm requires UT2004 (if you're looking for the recently announced Alien Swarm: Infested, that is still in development. Stay tuned to the site...

Post comment Comments  (10 - 20 of 67)
undeadbobop Feb 1 2011, 3:40pm buried:


wow valve stole this...
that is probably why its free

-6 votes     reply to comment
defragen1 Mar 23 2012, 4:18am replied:

derp, the people that made this mod got hired by valve

+6 votes     reply to comment
Newbez Aug 5 2010, 7:27pm says:

really good, i really like the fact a mod team managed to become so succesful, will definatley try this mod

+2 votes     reply to comment
bioswat Aug 4 2010, 12:55am says:

Its like alien swarm on source?

+2 votes     reply to comment
Slench Aug 4 2010, 5:29am replied:

the source version is based on this one so... yeah..

+3 votes     reply to comment
bXmMusic Dec 26 2010, 2:00am replied:

It's so ******* stupid. Valve is always like "LOL TEAM FORTRESS FROM QUAKE? LOL MINE NOW. Ooooo ALIEN SWARM UT2K4 :3 OURS TOO" Takin' ****.

-3 votes     reply to comment
RyanW2413 Apr 29 2011, 9:32pm replied:

For Alien Swarm: "Alien Swarm is a game and Source SDK release from a group of talented designers at Valve who were hired from the Mod community. Available free of charge, the game thrusts players into 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 y..." -Valve
You should really look at info before you criticize games.

+4 votes     reply to comment
Mr_Cookies Jan 20 2011, 3:25pm replied:

and also left 4 dead,counter strike and day of defeat.
Valve always pick a game that ins is from them, let the game smoother (bcause i think that the games before valve pickup is more,hmm,more "curt",in my opnion) and change about 40% of it,and this 40% is always good OR bad,never is always good,see left 4 dead beta vids and you will know :P

-1 votes     reply to comment
ashton93 Mar 24 2011, 1:27pm replied:

You guys are pretty retarded. Valve hired the old mod teams and then they created the Source versions of the games

+6 votes     reply to comment
MCGONN Aug 3 2010, 2:32pm says:

Well, I can't run AS:S so I might as well play this version.

+3 votes     reply to comment
r4y98 Mar 31 2011, 9:48pm replied:

he he ***

+2 votes     reply to comment
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Release Date
Released Jun 30, 2005
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