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.

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Exterminatus Beta 8.21 massively improves on the Lictor cloaking effect used in the version we released in January, adds a whole new map and inclues a great deal of new sound effects.

Exterminatus Beta 8.21 Installer
Exterminatus Beta 8.21 (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 8.21 listed in your library.

Since the last Beta a considerable amount of rebalance has been done to tweak the Tyranid team. Genstealers have been elevated toa reward class, reducing the Tyranids easrly game advantage in speed and access to shortcuts. The new Lictor cloak required a substantial amount of tweaking since the Lictor is now rendered completely invible to his prey. Zoanthrope's healing ability is now part of the default wargear and is triggered using the Reload key, but has been nerfed to reduce the health it grants to most classes. Biovores can now bombard targest without fear of hurting their teammates (and being penalised points for friendly fire) while actually doing more dmage to their intended targets, however the rate of fire has been reduced to keep tem from being overwhelming.

On the marines side of the mod, Tarantulas now handle damage much more like regular teammates resisting friendly fire and flames in general. The Specialist's Maltagun and Plasmagun have both been upgaded to bring tem onto par with the Flamer. The veteran classes powersword now cuts through Carnifex armor, making it much easier to take out the big bugs from up close. The marine also have a batch of new sound effects and battle cries, thanks to DontAsk and Stormwolf597.

The new map in version 8.21 is called ex_forge, and is set on an imperial forge-world, an industrialised planet wher a great deal of the imperium's tools, machines and weapons are constructed. ex_forge features 5 capturable objectives, each with multiple aceess routes and an extensive set of air ducts allowing the regular routes to be bypassed. DontAsk has provided whole new sets of ambient machine noises and adeptus mechanicus decals for this map.

Since Bloodravens replaced the Ultramarines in Beta 8.10 i've been working on the chapter skin packs to make them work with the latest version of EX. You can find skin packs for most of the major chapters on the 40ksource.com downloads page. I'm hoping to extend these packs in future to include battle cries specific to their chapters for which we need voice actors to record the lines.

As usual there is a large number of niggly bugs and minor asthetic improvements throughut the mod that just make 8.21 that much more polished than the version we released in January 2015. A full chnage log can be found on the EX ModDB features page.

If you're wondering what to expect to see from EX next, StormWolf597 and Wikkyd have been working on a Dreadnaught player model for the marine team...

Blood Ravens Beta 8.10 Release

Blood Ravens Beta 8.10 Release

10 months ago News 6 comments

Beta 8.10 introduces a new hivefleet to Exterminatus, Leviathan, replacing the old hivefleet and Blood Ravens replacing the Ultramarines as the default...

Exterminatus Beta 8.0 Released

Exterminatus Beta 8.0 Released

1 year ago News 6 comments

WH40k themed, multiplayer mod Exterminatus has just released Beta 8 to run on the Source SDK 2013.

Exterminatus Game Group 1000 Strong

Exterminatus Game Group 1000 Strong

1 year ago News 4 comments

Warhammer 40,000 themed Source mod Exterminatus exceeds 1000 members in it's steam community group.

Exterminatus - The First Founding

Exterminatus - The First Founding

2 years ago News 4 comments

Added three new chapter skin packs to the Warhammer 40,000 themed Source mod Exterminatus. Iron hands, Raven Guard and the White Scars chapters are the...

RSS feed Downloads
Exterminatus Alpha Patch 8.25 (Zip)

Exterminatus Alpha Patch 8.25 (Zip)

1 week ago Patch 0 comments

This patch contains all the changes from Exterminatus alpha 8.24 to alpha 8.23 including two updated maps, improvements to the reward menus and dreadnaught...

Exterminatus Alpha 8.25 Installer

Exterminatus Alpha 8.25 Installer

1 week ago 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 Beta 8.21 Installer

Exterminatus Beta 8.21 Installer

5 months ago 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 Beta 8.21 (Zip)

Exterminatus Beta 8.21 (Zip)

5 months ago Full Version 0 comments

This zip archive includes all you need to host and play Exterminatus - Rival Species 2. Two Species: Humans and Tyranids. Twelve distinct classes, each...

Exterminatus Alpha 8.24 Installer

Exterminatus Alpha 8.24 Installer

2 weeks ago Full Version 2 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 8.24 (Zip)

Exterminatus Alpha Patch 8.24 (Zip)

2 weeks ago Patch 0 comments

This patch contains all the changes from Exterminatus alpha 8.23 to alpha 8.24 including improvements and bug fixes to the Dreadnaught class and tweaks...

Post comment Comments  (70 - 80 of 1,275)
neophus Mar 8 2014 says:

good mod but miss people, we need a group who purpose game events

0 votes     reply to comment
TωısтeđHeαdαcħe Mar 2 2014 says:

Look's great.

0 votes     reply to comment
Sergeant_Pepper123 Feb 23 2014 says:

Whats the player base like? Do lots of people play this?

+1 vote     reply to comment
ChromeAngel Creator
ChromeAngel Feb 26 2014 replied:

The servers always have players when there is a scheduled event on, but there are rarely players the rest of the time. See the "Getting Together" section of the profile for more information about the regular and frequent scheduled games.

+1 vote   reply to comment
ledernierrempart Mar 26 2014 replied:

maybe puting it on steam would attract players

-1 votes     reply to comment
JrComissarValvatorez Mar 27 2014 replied:

You can't just put mods on Steam, and Valve won't greenlight a SourceMod with a non original IP.

0 votes     reply to comment
ledernierrempart Mar 26 2014 replied:

poor classic combt gameplay in an old graphic environment with classic interaction between player 'shoot, shoot, hit, etc' while there is renegadeX, natural selection, team fortress and maybe others i dont know which do more or less the same but better. the W 40k era is good but this mod got nothing special. thats why there is very few players on this mod. even me after watching some gameplay and feature video i dont want to play it. nowerdays, if you want people to come on a old like game mod do something original, attractive. here there is nothing attractive and original beside w40k era.

0 votes     reply to comment
Guest Mar 27 2014 replied:

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

CptMold Feb 8 2014 says:

Okay, just letting you know, I used to not be able to play this mod. It used to crash on startup. I contacted ChromeAngel and he said that I needed to run Source SDK Base 2007 at least once. So, I did, and I got the same error message and crash on startup.

I was able to get it working, so here's what I suggest to fix it if this happens to you: Verify the files for SDK Base 2007 before you play, and let it open up and show the main menu before you play EX for the first time. You verify it by going under library>tools and right clicking sdk base 2007, and clicking properties. Under local is the option to verify.

I'm still not sure why it did this for me, but chances are it won't happen to you. I'm just saying this in case you do have the issue.

+1 vote     reply to comment
Librarian_Moarfistin Feb 2 2014 says:

Angry Marines

make it happen

+1 vote     reply to comment
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Release date
Released 2010
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268 votes submitted.

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Ratings closed.

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 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 by SnakeTheFox

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