• A horde of 50 headcrabs leaded by the artificial inteligence and which grow each time a player join the server.
  • Headcrabs can zombify at any momments the players (who play as combines) to become zombines.
  • After that the players succed to annihilate 50 headcrabs, the boss headcrab make their enter in the game
  • HE grenades and knifes do instant kill against headcrabs
  • Respawn and an optional infinite ammo avaible
  • Musics from Half-Life 2 played each round.
  • Fully customizable.

In this Counter-Strike Source mod, the goal for the players who fight as combine soldiers is to annihilate the horde of headcrabs leaded by the artificial intelligence. For this, they must kill the whole horde (+50 headcrabs) and then kill the king headcrabs. During each round, the number of headcrabs spawned in the map is equal by default to the number of players in the server plus three. So for instance, if there are 5 players connected on the server, then the mod will spawn 8 headcrabs in the opposite team ! Of course this number can be modified by admins

When the players finally manage to annihilate the headcrab horde, the king headcrabs make their entrances in the game. They are monstrous over sized headcrabs who can endure a lot of damages before dying ! And the worst of all, it is that despite their size, they are as fast as you ! So even if the normal headcrabs are easy to kill, few bullets and you are done with them, the king headcrabs will need a new tactic to defeat them.

But there is also another thing that make Headcrab Mod more stressful ! Each time a player is being attacked by an headcrab, he can suddenly being transformed in a zombine (everybody know that headcrabs jump on heads to control their victims?) ! So be careful when one of your team mate is attacked by headcrabs ! You might see him the first time shooting on the head humpers, and then the second time running at you with a crab on his head and in hurry to shred you in small pieces. This always add more stress since any friendly player can become your worst enemy at any time !

The mod is bug free and does not make problems, the admins can easily configure it. Also, the mod is compatible with almost every other scripts, allowing you to add more functionalities to make your server unique. Even if I don't work any more on this mod but I might complete it one time. I have already planned to port the original Gonnarch from Half-Life 1 into Headcrab Mod to be the final boss (followed with many King Headcrabs of course !). There will be also a new rank system which will, for instance, sphmn as an elit combine the players who have the best KD/Ratio in the server or as a metro police those who have more deaths than kill.

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The wrong guys in the wrong place CANNOT make ... WallPadder 3 In the fight
Blog RSS Feed Report abuse Latest News: Secondary campaigns in developement

2 comments by Bioko on May 1st, 2012

It is now more than a month that the full mod is available to download. Despite all my attention and my tests, there was some bugs and gameplay problems which was still left, and since the release of the mod, I did my best to fix it. Today, even if some minor bugs may still occur the mod is mostly free from errors.

While the main campaign is completed, I still have many maps and content on my computer that I had decided to cut during the development of the mod because I knew it would be taking to me too much time to implement it. However, now that I am done with the main campaign, I can try to finish this cut content and to add it to the mod as a "Secondary Campaign" in order to extend the gaming experience and the life time of the mod, so that it could reach about two hours of playing ! I shall post some screenshots of the work in progress soon.

Else, the mod is now available and supported on Desura, so if you have this platform installed you can directly install and play my mod !

Thank you for reading this ! Remember that if you enjoyed the mod, don't hesitate to rate it !

Desura Digital Distribution

Media RSS Feed Latest Video
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Ground Complex - Full Release

Ground Complex - Full Release

Mar 17, 2012 Full Version 6 comments

After more than five months of work, here it is ! Including the complete single player campaign, it does only require Source SDK Base 2007 !

Headcrab Mod 1.1.5

Headcrab Mod 1.1.5

Feb 18, 2011 Patch 7 comments

The players incarnate a team of combine soldiers, who must survive against a horde of 50 headcrabs who will constantly harras them until the king headcrabs...



Oct 24, 2009 Multiplayer Map 2 comments

a small card or combine must Survive in a small home against crab

Headcrab Mod 1.1.0

Headcrab Mod 1.1.0

Sep 29, 2009 Full Version 12 comments

Final version of Headcrab Mod 1.1.0, included many new stuffs and a lot of FUN !!

Headcrab Mod 1.1.0 BETA

Headcrab Mod 1.1.0 BETA

Sep 26, 2009 Demo 3 comments


Post comment Comments  (30 - 40 of 85)
hnhan09 Jun 15 2011 says:

Thank you
Can I play it multiplayer

+2 votes     reply to comment
ImperialKaskins Jun 16 2011 replied:

Yes you can. What type of multiplyer?Offline and Online. Sure you can...
Online only the original one and for LAN in your house you can lan up to 5 PCs :D Because normally i play Offline then Online due to LAG . :D
Enjoy Killing some HeadCrabs :P

+2 votes     reply to comment
hnhan09 Jun 14 2011 says:

I already have est4css and Source Python Extension.But I don't know why
my Headcrabmod,headcrab have gun
Every thing is ok except the headcrab have gun

+2 votes     reply to comment
ImperialKaskins Jun 15 2011 replied:

Open console by pressing "~" beside the button 1. Unless you using Vietnamese Keyboard. LOLZ
Enable Console in option if you cannot press ~ to open console.

Then type in Bot_knives_only

+2 votes     reply to comment
hnhan09 Jun 14 2011 says:

I dont know what problem with my CS Source,All of my zombie mod using eventscripts,Zombie have gun.Even Alien wave mod,alien have gun too
Edit:Sorry for my Bad English,I'm from vietnam

+2 votes     reply to comment
Bioko Creator
Bioko Jun 14 2011 replied:

You also need est4css and Source Python Extension to run Headcrab Mod, check this link :

+2 votes   reply to comment
hnhan09 Jun 14 2011 says:

I sovled the problem and fix it,but now I have another problem
When I play with bot,all of the headcrab have gun
How I can make headcrab don't have gun

+2 votes     reply to comment
ImperialKaskins Jun 15 2011 replied:


Its all Humans vs Bots
Not Human + Bot Vs Bot.
So once you enable Knife, your allied also use knife, they pawn HeadCrab well, but mostly their mind is disobedience to headcrap, but their flesh will serve head crap well...

+2 votes     reply to comment
hnhan09 Jun 11 2011 says:

you put .dat file into:cstrike/addons/est

+2 votes     reply to comment
hnhan09 Jun 11 2011 says:

when I type es_load headcrabmod it say:
Could not open script for addons/eventscripts/headcrabmod/es_headcrabmod.txt
Does anyone know how to fix it

+1 vote     reply to comment
ImperialKaskins Jun 12 2011 replied:

Did you type es_load headcrabmod ? Because i realize i type headcrapmod for instead headcrabmod? :P See if it helps.

+1 vote     reply to comment
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Counter-Strike: Source Icon
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Released 2009
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