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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Blog RSS Feed Post news Report abuse Latest News: Happy Birthday, Swarm Director 2!

About Swarm Director 2 with 0 comments by BenLubar on Jul 3rd, 2015

v3 Full

You could say that Alien Swarm is like Left 4 Dead because it has 4-player co-op and it’s made by Valve. But then you could say Left 4 Dead is like Call of Duty because they both contain guns and zombies.

The fact is, you can’t really compare games using their surface appearance. Alien Swarm is the only free non-competitive Valve game. Alien Swarm brought the Source SDK and Source modding in general to people who had never purchased a Valve game before.


Sadly, Alien Swarm was all but abandoned by Valve, with no updates to the core game since 2010, the year the game was released. But because it’s free and open to modding, anyone can continue from where Valve left off. Or, for that matter, take it in a completely different direction. For example, Lambda Wars is a Half-Life 2-themed real time strategy game.

But I’m not here to talk about total conversion mods. And you’re not here to read about them. Let’s talk Alien Swarm.

Although Swarm Director 2 improves gameplay on several official and custom maps, it does not contain its own content. Instead, a list of suggested custom campaigns and a place to download each is included with the mod, and fixes for bugs in those maps are written in C++ as part of the mod’s code. Additionally, if you have Reactive Drop installed, Swarm Director 2 will load the Extermination, Operation Cleansweep, and Paranoia campaigns from it.

Operation CleansweepParanoia

We also add new features for mappers, the biggest example being a new pair of entities that can be used to make ceilings, bridges, or basically anything that would normally block your view in a top-down perspective but would make sense for someone looking through the eyes of a marine to see and for light to bounce off of.

A lot of the new features concern marine bots and don’t even require mappers to do any extra work. For example, bots automatically detect the most frequently used method of creating elevators, trains, and other places where the team needs to gather in one spot, and will gather inside if the squad leader is there. Bots will also automatically gather inside level exits, drop healing beacons as medic and ammo from the ammo satchel, and flank shieldbugs when fighting them.

Alien Swarm’s birthday is a mere 15 days from now, on the 19th of July. It will be 5 years old. In these five years, over 800 years of Alien Swarm game time has been logged. More than 2,250,000 people have played the two missions required to get the TF2 hat. Here’s to another 5 years.

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v3 Full
Alien Swarm

v3 Full

Jun 18, 2015 Swarm Director 2 Full Version 1 comment

v3 is finally here, with a heap of bugfixes and new features.

Reactive Drop 1.17
Alien Swarm

Reactive Drop 1.17

Jun 18, 2015 Alien Swarm: Reactive Drop Full Version 4 comments

Delete old version. Extract to <path to steam>\SteamApps\sourcemods. Restart Steam. In this version you'll see bug fixes, map improvements, new map Nest...

Chaos Swarm Marines Red Edition
Alien Swarm

Chaos Swarm Marines Red Edition

May 29, 2015 Chaos Swarm Marines Full Version 0 comments

There new custom mod red edition special for chaos swarm marines and moddb, revision 7.3

Chaos Swarm Marines
Alien Swarm

Chaos Swarm Marines

May 29, 2015 Chaos Swarm Marines Full Version 0 comments

There new mod chaos swarm marines, revision 7.3

v2 Incremental Update 4
Alien Swarm

v2 Incremental Update 4

May 21, 2015 Swarm Director 2 Full Version 0 comments

An incremental update to v2 containing new features and bugfixes. Compatible with v2 through v2 Incremental Update 3.

Space Swarm Marines v8.1 (update)
Alien Swarm

Space Swarm Marines v8.1 (update)

May 20, 2015 Space Swarm Marines Patch 1 comment

Well done i fixed more models and animations. :)

Post comment Comments  (10 - 20 of 180)
Flash112 Jun 1 2011, 7:30am says:

can you play this in singleplayer as well? because my internet really sucks a$$... :(

+1 vote     reply to comment
tschumann Jun 17 2011, 12:04am replied:

You can add bots. I think the command is cl_addbot and you need to give two integer arguments (slot and class I think).

+2 votes     reply to comment
geotavros May 6 2012, 2:27pm replied:

incorrect, cl_selectm 0 2 adds a bot, where 0 is character id, 2 is slot. It stands for "client select marine". To remove bot, cl_dselectm 0, where 0 is character id, from 0 to 7.

+3 votes     reply to comment
KEVLAR60442 Mar 6 2011, 6:39pm says:

...and then people stopped playing all of a sudden...

+11 votes     reply to comment
SlayerX3 Nov 8 2010, 7:50am says:

I wish there were a Aliens 2 and a Warhammer Space Hulk mods for this game

+4 votes     reply to comment
NoiseChampion Feb 10 2011, 1:19pm replied:

nosm0ke is making a Warhammer 40K mod. It is still in the works though

+2 votes     reply to comment
masternerdguy Nov 20 2010, 7:10pm replied:

this is as close to aliens as you can get without Fox coming after you for copyright infringement. They have sent cease and desists to every Alien themed mod project I've ever encountered.

+3 votes     reply to comment
Clockworks Nov 3 2010, 12:23am says:

you know what i'd like to see for as a mod? starcraft! hell that would be awesome.. marines, ghosts, firbats.. hot damn and infested marines :D! anyone agree?

+5 votes     reply to comment
█Black/Brunez█ Nov 26 2010, 8:05pm replied:

That would be really awesome dude! But I wonder that Blizzard would try to **** up the mod because of copyrights...

+2 votes     reply to comment
uthere1 Mar 19 2011, 3:13pm replied:

if theres no money being made off of the mod then theres no real copyright infringement. besides we're talking about a mod, its a little bananars to go copyright crazy over a mod even for a big company like blizzard.

0 votes     reply to comment
masternerdguy Jun 12 2011, 6:34pm replied:

thats incorrect. at least in the usa copyright infringement is still infringement even if no money is involved.

+2 votes     reply to comment
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Alien Swarm
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Released Jul 2010
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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, 6:13am by goodone

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