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This mod is set in Games Workshop's, great Warhammer 40,000 ( 40k ) universe. Each map pits Imperial Space Marines against the Tyranid swarm, competing in a series of mission objectives, culminating in a battle to decide the fate of the planet.

Latest scheduled play times and list of servers:
steamcommunity.com/groups/exterminatusgame

Exterminatus 7.61 Released

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Exterminatus 7.61 Released

Beta 7.61 of the Warhammer 40k themed Source mod Exterminatus has been released. This new version features a defensive turret for the marine team, numerous improvements and bug fixes.

Jan 25, 2014  
Exterminatus Game Group 1000 Strong

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Exterminatus Game Group 1000 Strong

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

Dec 21, 2013  
Exterminatus - The First Founding

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Exterminatus - The First Founding

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 last of the first founding chapters to be represented...

Nov 24, 2013  
Chapter skins : Salamanders,  Imperial Fists and Black Templars

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Chapter skins : Salamanders, Imperial Fists and Black Templars

Three new chapter skins for warhammer 40k Source mod Exterminatus. Salamanders, Imperial Fists and Black Templars.

Nov 2, 2013  
Colours of the Imperium

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Colours of the Imperium

Three new chapter skin packed for the Warhammer 40k themed multiplayer Source mod Exterminatus. The newly supported chapters are: Spacewolves, Bloodravens and Crimsonfists.

Sep 14, 2013  
Bloodangels Arrive

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Bloodangels Arrive

Warhammer 40,000 themed Source mod Exterminatus has a two new skin pack available. The new skins allows you to play as (or against) Bloodangel space marines.

Sep 7, 2013  
Exterminatus Beta 7.50 - Purge with Flame

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Exterminatus Beta 7.50 - Purge with Flame

Exterminatus Beta 7.50 includes all the improvements to EX that have been made this year. You can find a full change log on our moddb page. Major new additions are Flamers and Plasmaguns for specialists...

Apr 20, 2013  
Exterminatus Alpha 7.33 Rollup Patch

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Exterminatus Alpha 7.33 Rollup Patch

Today's patch rolls up all the improvements made to Exterminatus this year. The patch will bring your Beta 7.25 up to date with new marine weaponry for the specialist class ( plasmagun and flamer ), adds...

Mar 3, 2013  
Happy Holiday Heretics - Beta 7.25 Released

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Happy Holiday Heretics - Beta 7.25 Released

Warhammer 40,000 multi-player mod Exterminatus adds assault marines and venom cannon wielding carnifexes along with many other improvements in Beta 7.25

Dec 22, 2012  
Alpha 7.10 the Assault Roundup

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Alpha 7.10 the Assault Roundup

Exterminatus Alpha 7.10 features a new player class the Assault Marine and is a round up of all the alpha updates from the 7.0 beta version. 7.10 also features new versions of the maps Tarsis Ultra and...

Nov 11, 2012  
Exterminatus Beta 7.0 Release

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Exterminatus Beta 7.0 Release

I am happy to announce the release of Beta 7 of Exterminatus - Rival Species 2. This beta brings the number of player classes up to 12 and a total of 9 playable maps with the addition of the marine apothecary...

Sep 29, 2012  
Apothecary VS Biovore

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Apothecary VS Biovore

Exterminatus, a Warhammer 40,000 mod for Source releases a round up of alpha patches since it's last Beta release. Major new features in this alpha is the inclusion of two new player classes the Marine...

Aug 12, 2012  
Exterminatus Beta 6.25 Released

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Exterminatus Beta 6.25 Released

Beta 6.25 has been focused on improving the balance and fixing unwanted quirks in the mod, rather than adding new features and content. This full install incorporates the last 5 weeks of balance testing...

Jun 9, 2012  
Exterminatus Beta 6.20 Released

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Exterminatus Beta 6.20 Released

New map ex_city_conflict. All existing maps rebuilt using a new objective system. Custom loading screens for each map. Class overviews in the class selection menu. Class based hints for new players. New...

Apr 28, 2012  
Fear the Genstealer in the Year of the Dragon

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Fear the Genstealer in the Year of the Dragon

Happy new year 40k fans, it gives me great pleasure to finally announce the release of Beta 6 of Exterminatus - Rival Species 2. This beta brings the number of player classes up to 10 and a total of 8...

Jan 20, 2012  
Exterminatus Development Spring 2011

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Exterminatus Development Spring 2011

April 2011 news update for the warhammer 40,000 themed source mod Exterminatus. New features are being developed while progress is being made toward the new genestealer class.

Apr 9, 2011  
Silence from the Imperium

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Silence from the Imperium

February 2011 news update for Exterminatus, Warhammer 40,000 themed mod for Half-Life 2. At long last we have a new public Beta (version 5.5), which adds an entirely new class, the Terminator and a new...

Feb 5, 2011  
June News Update - Plasma Pistols are here

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June News Update - Plasma Pistols are here

Exterminatus mod for the Source game engine, news update for June 2010. This month we have a new open beta version 5.03 that aims to fix a client crash during map changes, replace the Veterans Inferno...

Jun 22, 2010  
The votes are in... we have a winner

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The votes are in... we have a winner

May news update for Exterminatus, Warhammer 40,000 themed mod for Half-Life 2. Terminators, Genestealers and plasma weapons.

May 9, 2010  
The Emperor hears your prayers

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The Emperor hears your prayers

Spring news update for Exterminatus, Warhammer 40,000 themed mod for Half-Life 2. After ending January on a high note with the first publicly playable release of EX we followed up with a small patch (5.01...

Mar 27, 2010  
Exterminatus Has Arrived

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Exterminatus Has Arrived

The Rival Species Team is proud to announce the release of the first open beta version of their Warhammer 40,000 themed Half-Life 2 modification "Exterminatus". The beta version is fully playable, features...

Jan 30, 2010