Exterminatus : Destruction of all life on a world by the Imperium of man.

This mod is set in Games Workshop's, great Warhammer 40,000 ( 40k ) universe, as seen in Dawn of War and our previous mod WH40K : Rival Species.

The 40k universe is set in the year 40,000 by which time mankind has colonized millions of worlds thought the galaxy by interstellar warp travel. Humanity is ruled by a vast, uncaring, priesthood/bureaucracy on Earth in the name of an all powerful God/Emperor. A galaxy of insidious alien races have threatened and fought the Imperium since its earliest days in innumerable wars and battles.

Developers of this mod have deliberately chosen to include only the Imperium and Tyranid races out of the many that exist in the 40k universe in order to focus on the quality and polished that the mod would not have otherwise. Please do not ask about the other 40k races.

Exterminatus is feature complete and the game is fully playable. A public Beta is available for anyone that wants to try it. New Beta versions will be announced here, but there are also fortnightly public Alpha builds which being incomplete, unbalanced and often unstable aren't really worthy of news on ModDB, but are detailed at 40ksource.com.

Each map sees teams of Marine and Tyranid players competing in a series of mission objectives, culminating in a battle to decide the fate of the planet. This mod is purely multi-player, there is no co-op mode or player bots available.

Players that do well for their team are rewarded with the option to use more powerful player classes including special and heavy weapons marines, terminators, the tank like Carnifex and terrifying Lictor.


  • Two teams, with their own distinct appearance and game play styles
  • Three tiers of player classes, achieve success to unlock superior classes
  • Twelve playable classes, each with their own unique sounds, weapons and abilities
  • Mission and Objective based game play, with progressive spawn waves

Getting Together
Regular scheduled games are being hosted on a number of dedicated servers several times each week usually mid-week and weekends at between 7 and 8PM GMT. Please check our steam community page for upcoming scheduled games and servers addresses.

Image RSS Feed Latest Screens
Scortched Shrine Battle for the hilltop Lictor on a Rooftop
Blog RSS Feed Report abuse Latest News: Exterminatus Beta 8.0 Released

6 comments by ChromeAngel on Jul 18th, 2014

Since spring of 2014 I have been working on migration of Exterminatus to the 2013 version of the Source SDK. Players should find this version is more stable, has shorter loading times and a high frame rate than the previous Beta which uses the 2007 Source SDK.

Mitch has set up a new dedicated server in Australia ( [AU] Mitch's Exterminatus Server) with encouragement from Ceadda. The new server should be listed in the in-game server browser, but you can connect direct at

Installer Download
Exterminatus Beta 8 (Installer)

Zip Download
Exterminatus Beta 8 (Zip)

Installation instructions

  • Install the "Source SDK Base 2013 Multiplayer" to your steam library (it's listed under "tools").
  • Run the Source SDK Base 2013 Multiplayer at least once. You can exit once the menu has finished loading.
  • If you already have a copy of the EX beta, delete it.
  • Run the Beta installer and follow it's instructions.
  • Restart Steam. You should now see both the Exterminatus Beta 8.0 listed in your library.
Battle for the hilltop


  • The stormbolter now fires a single shot twice as fast, rather then 2 shots at once.
  • New Deathspitter impact sounds by DontAsk4470
  • New Sporemine bursting sounds by DontAsk4470
  • Turret Sound effects for "target spotted!" and "damaged" (HL2 sounds found by DontAsk4470).


  • Buffed Terminator armor effectiveness against most attacks, but still vulnerable to psionics.
  • Buffed Terminator starting ammo from 60 to 120
  • Buffed Stormbolter damage from 17 to 30
  • Nerfed Tarantulas rate of fire to the same as the marine's heavy bolter.
  • Buffed Tarantula max range from 1200 to 2400.
  • Buffed Tarantula damage from 8 to 16 to compensate for it's lower ROF
  • Nerfed the rate at which the Meltgun does damage
  • Buffed Meltgun damage from 18 to 19 per tick.
  • Buffed Flamer damage from 23 to 24 per burn.
  • Buffed Assult marine jump pack range.
  • Nerfed Plasmagun charge damage.
  • Nerfed Genstealer leap range.
  • Nerffed Carnifex armor protection.
  • Nerfed Lictor talon damage from 66 to 50.
  • Buffed Lictor leap range.
Scortched Shrine


  • Made servo skulls invulnerable (their deaths were causing crashes).
  • Moved the Tarantulas "eye" so attacking players show now remain in it's field of vision even at melee range.
  • The screen shot key should now work in all the menus, regardless of what key you have it bound to.
  • Objective icons are now aligned more centrally.
  • Switched to the "sv_pure" method of checking server and client are running the same version. The default whitelist should allow chapter skins to keep working
  • Improved the class and war gear menu presentation.
  • Prevent Leaping players from seeing out of the map on Thunderhawk, Tarsis Ultra, Ichar IV, Valley and Lycantium.
  • Added a button controlled door to the vent on Orbital to slow down players using that short cut.
  • Added an extra level of detail to one of the bronze forgeworld panel props (the one with two tanks).
  • Grated DontAsk4470 a "Contributor" hero banner for his work with Source Filmmaker, sound effects and general community spirit.
  • Tweaked the tyranid warrior ragdoll to be less ridged (now more bouncy and inclined to do the splitz).
Lictor on a Rooftop

Technically this version is actually 8.02, it took more alpha versions to get to this state than I had expected when I started the migration at 7.9.

I have several more sound effects from DontAsk that can be included in EX, but I don't think they would be worth holding up the Beta release any longer. I expect i'll get around to including them in an alpha patch over the course of the (northern hemisphere) summer.

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Exterminatus Alpha 8.08 Installer

Exterminatus Alpha 8.08 Installer

Dec 14, 2014 Full Version 0 comments

This download is a self extracting installer including all you need to host and play Exterminatus - Rival Species 2. Two Species: Humans and Tyranids...

Exterminatus Alpha Patch 8.08 (Zip)

Exterminatus Alpha Patch 8.08 (Zip)

Dec 14, 2014 Patch 0 comments

This patch contains all the changes from Exterminatus alpha 8.07C to alpha 8.08 including: Leviathan infestation of the ex_city_conflict map. Aesthetic...

Exterminatus Alpha 8.07C Installer

Exterminatus Alpha 8.07C Installer

Dec 6, 2014 Full Version 0 comments

This download is a self extracting installer including all you need to host and play Exterminatus - Rival Species 2. Two Species: Humans and Tyranids...

Exterminatus Alpha Patch 8.07C (Zip)

Exterminatus Alpha Patch 8.07C (Zip)

Dec 6, 2014 Patch 0 comments

This patch contains all the changes from Exterminatus alpha 8.07B to alpha 8.07C including: Updated soundscapes from DontAsk, updates to ex_valley and...

Exterminatus Alpha 8.07B Installer

Exterminatus Alpha 8.07B Installer

Nov 30, 2014 Full Version 0 comments

This download is a self extracting installer including all you need to host and play Exterminatus - Rival Species 2. Two Species: Humans and Tyranids...

Exterminatus Alpha Patch 8.07B (Zip)

Exterminatus Alpha Patch 8.07B (Zip)

Nov 30, 2014 Patch 0 comments

This patch contains all the changes from Exterminatus alpha 8.07 to alpha 8.07B including: New and updated soundscapes from DontAsk, updates to 5 maps...

Post comment Comments  (0 - 10 of 1,237)
Guest Dec 10 2014, 9:56am says:

This comment is currently awaiting admin approval, join now to view.

ChromeAngel Creator
ChromeAngel Dec 15 2014, 1:20pm replied:

Join the Steam Community group and play at the scheduled events. We've had 10 and 16 player (full server) events in the last week alone.

+1 vote   reply to comment
Only-Dave Aug 23 2014, 1:20pm says:

Are you putting this game on steam page on green light??

+1 vote     reply to comment
ChromeAngel Creator
ChromeAngel Aug 24 2014, 5:38am replied:

In short, no, I won't be putting Exterminatus on Greenlight. There is more information about why not in this Steam discussion ( Steamcommunity.com ).

+3 votes   reply to comment
killerzerg Aug 18 2014, 8:29pm says:

Hi i'm a big warhammer fan but i've never played half-life. So would it be possible to play the mod with a cracked game?

+1 vote     reply to comment
ChromeAngel Creator
ChromeAngel Aug 19 2014, 3:08am replied:

You don't need to buy (or crack) anything to play Exterminatus. You can download the the Source SDK base 2013 through Steam for free. Check out the Getting Started pages in the EX manual ( 40ksource.com ).

+1 vote   reply to comment
killerzerg Aug 19 2014, 3:25pm replied:

thanks, i tried a match today and it was a lot of fun ,though there where only 5 players and all but 1 left after 2 games :(

+1 vote     reply to comment
Mkilbride Jul 20 2014, 2:46am says:

Been following this mod for years, since the initial release and the old HL1 version.

Amazed to see new versions coming out, and yet it still seeming to not have changed at all.

Still looks like a 2007 Mod.

+8 votes     reply to comment
Janissaire Oct 22 2014, 10:20pm replied:

It's a pvp mod,it's only ********.

-2 votes     reply to comment
Janissaire Jul 18 2014, 4:48pm says:



-2 votes     reply to comment
JrComissarValvatorez Nov 1 2014, 11:00am replied:

Because a single player mod requires less work then a multiplayer mod. In the words of a Servitor "Does not compute!"

+1 vote     reply to comment
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Release Date
Released Jan 29, 2010
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263 votes submitted.

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Highest Rated (4 agree) 10/10

Incredible mod I havent played it yet but im sure its good nice and warmy for the winter nights of 2010/2011

Nov 29 2010, 2:33pm by MatejFilaković

Lowest Rated (7 agree) 1/10

Decent mod, but an unhelpful community who only open their mouths to troll and talk shit like it's a competitive shooter. Makes MOBAs and Youtube comment sections look civil. Avoid. I simply asked how to get ammo for the Termies stormbolter and was told "to quit acting like it's CoD", whatever that was supposed to mean. I proceeded to ask again whether I was supposed to just let myself die or if there was an ammo point or something, and didn't get an answer. Then a match later, as I was lost on…

Nov 24 2013, 2:52pm by SnakeTheFox

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