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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About Swarm Director 2 with 2 comments by BenLubar on Jul 7th, 2014

If you play an Alien Swarm map, you see something like this:

In-game view of Area 9800 Landing Zone

If you're a mapper, you see something like this:

However, if you're an alien or a marine bot, you see something like this:

Node graph from Area 9800 Landing Zone

Today, I'll explain the third view. The one you don't see unless you're actually part of the game. The little yellow boxes (nodes) tell the AI "you can go here". The game automatically connects nearby nodes to form a node graph. It's like a street map, but there are no houses and streets can appear and disappear at any time if something blocks a path between nodes.

Hammer view of Area 9800 Landing Zone without propsHammer view of Area 9800 Landing Zone with props

On the left is a room with the props removed. On the right is the same picture, but with the props. Open them in tabs and flip back and forth a few times if you can't connect them in your head.

There are two main problems with this layout: there are no hints for marine bots and some of the nodes are inside obstacles. For example, the forklift, dumpster, crates, and shelves are on top of some of the nodes. Those nodes are effectively nonexistent because they're always blocked.

Hammer view of Area 9800 Landing Zone without propsHammer view of Area 9800 Landing Zone with props

In this picture, the marines have places to stand and the nodes aren't blocked by obstacles. Since the marines aren't allowed under the shelves or past the forklift, there are no positioning hints on the right. If there were, the marines could choose to stand there and try to walk where they can't. This is an example of a good layout for AI nodes.

In a game like Swarm Director 2 that depends heavily on AI, a good node graph is very important.

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v1 Full
Alien Swarm

v1 Full

Jul 4, 2014 Swarm Director 2 Full Version 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 comment

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 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 13 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 2 comments

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 2 comments

Extract this into sourcemods. Requires version 1.07 installed

Post comment Comments  (60 - 70 of 184)
badMEDIA
badMEDIA Jul 21 2010, 6:17pm says:

How do you set up serve that allows cheats cuz it never works
even when I do what the developer consoles say so I can use cheats
nothing happens
(i know how to set up server)

0 votes     reply to comment
klemen1702
klemen1702 Jul 21 2010, 2:34pm says:

POST YOUR MAPS SOMEWHERE I WANNA PLAY THEM and also can u make 1 map 4 me
its just (starship troopers) like you have to defend the base againts oncoming alien wawes tnx (mail:klemen1702@yahoo.com)

+3 votes     reply to comment
DWit1991
DWit1991 Jul 21 2010, 8:15am says:

THis game has been made for a WH40K Spacehulk mod i can hardly wait! :D

+2 votes     reply to comment
TensaZangetsu
TensaZangetsu Jul 21 2010, 1:47am says:

how u use ur ps3 controller for this game cuz i wnna use mines

+2 votes     reply to comment
Dremth
Dremth Jul 21 2010, 2:50am replied: +2 votes     reply to comment
TensaZangetsu
TensaZangetsu Jul 21 2010, 12:53pm replied:

thts all then i can play

+2 votes     reply to comment
Dremth
Dremth Jul 21 2010, 1:08am says:

I hope they release some more campaigns. I'd be glad to pay $5-$10 each for them. This is such a fun-*** game.

+5 votes     reply to comment
Colossal
Colossal Jul 20 2010, 9:24pm says:

I've started on my campaign.

+2 votes     reply to comment
ᎶʋƝʂℋɨƤ_ℳƘ_ƖƖ
ᎶʋƝʂℋɨƤ_ℳƘ_ƖƖ Jul 20 2010, 8:54pm says:

i already created map in TileGen!

Developer.valvesoftware.com

+1 vote     reply to comment
badMEDIA
badMEDIA Jul 20 2010, 8:28pm says:

even though it says Mouse/Keyboard there is no
settings for the mouse :(

+1 vote     reply to comment
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Alien Swarm
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Windows
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Valve
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Alienswarm.com
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Released Jul 18, 2010
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Highest Rated (4 agree) 9/10

The fact that this game is free continues to amaze me. Alien Swarm is a top down shooter that feels like futuristic Diablo II to a large degree. You fight off hordes of aliens with your friends in order to complete missions that require teamwork skill, and sometimes a little luck. The game has RPG elements – you level up and get access to new gear, there are four character classes, and multiple characters within those classes to select. This game should be a popular addition to any LAN party or…

Aug 29 2011, 12:04am by Rodman49

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