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The Horus Heresy: Battle of Tallarn

Game overview

The Horus Heresy: Battle of Tallarn

The Horus Heresy: Battle of Tallarn is a turn-based strategy game that recreates one of the most important events in Imperial history. Command a vast array of tanks, Dreadnoughts, Knights and Titans across the toxic landscape.

Strategy Warhammer 40K Games Workshop Turn-Based Turn-Based Strategy
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About this game Read the full description


HexWar Games has partnered with Games Workshop® to bring you The Horus Heresy: Battle of Tallarn™. Get ready to fight the largest tank battle in Imperial history with more tanks and more destruction than ever!

After the virus bombing by the traitorous Iron Warriors rendered the surface of Tallarn deadly to biological life, the besieged forces call upon legions of tanks - from the Leman Russ to the almighty Baneblade to bring war to their enemy. The battles begin after the devastating blow that turned the planet into an apocalyptic wasteland, amid the grim conditions the survivors faced in the aftermath.

The Horus Heresy: Battle of Tallarn is a turn-based strategy game that recreates one of the most important events in Imperial history. Command a vast array of tanks, Dreadnoughts, Knights and Titans across the toxic landscape. Play as desperate Solar Auxilia units fighting squadrons of Iron Warrior Predators for control of vast underground bunkers.



All campaigns can be played as both Loyalist and Traitor.

6 Mission Apocalypse Campaign
In the wake of the death and destruction wrought upon Tallarn by the virus bombing, the Iron Warriors descended. As their patrols scoured the ruined planet's surface, they encountered unexpected resistance from the Imperial survivors. Protected from Tallarn's toxified atmosphere in their underground shelters, the loyalists launched a spirited campaign of hit-and-run attacks on the Iron Warriors.

6 Mission Resurrection Campaign
As the Imperium learned of the Iron Warriors' treachery and the fate of the survivors of Tallarn, their relief troops and armour arrived in force, only to be matched by those of the enemy. The Iron Warriors ground their way to Sapphire City, beneath which lay a subterranean network of tunnels and shelters which had served as a bulwark in the Imperial defence line.

6 Mission Revenge Campaign
Despite determined efforts, the Imperium were unable to shift the Iron Warriors from The Sightless Warren. Meanwhile fighting on the surface ground to a stalemate as heavy armoured units reinforced both sides. In a bid to sway the battle, The Iron Warriors' Macro-Transport “The Eagle's Talon” was brought into orbit around Tallarn, threateningly positioned to bring a new wave of troops to fight for the traitors.



  • 66 different units accurately recreated
  • 54 different weapons
  • Three campaigns, each of six linked missions
  • Four battle packs, each with six standalone missions
  • An eight mission tutorial campaign
  • Play all missions, other than the Tutorial, as either Imperial or Traitor forces
  • Tailor your army with custom force selection
  • Fight on the devastated surface of Tallarn or for control of the vast underground bunker system
  • 8 unique unit types
    • Aircraft
    • Flyers
    • Infantry
    • Tanks
    • Walkers
    • Super Heavy Walkers
    • Super Heavy Tanks
    • Titans
  • Future updates will add more missions and many more units

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System requirements Windows · macOS

Windows

Minimum

Minimum:
  • OS *: Windows Vista/7/8/8.1/10
  • Processor: Intel Core 2 Duo or AMD equivalent
  • Memory: 2 GB RAM
  • Graphics: DirectX compatible graphics card
  • DirectX: Version 9.0
  • Storage: 2 GB available space

macOS

Minimum

Minimum:
  • OS: Mac OS X 10.8+
  • Processor: Intel
  • Memory: 2 GB RAM
  • Graphics: Integrated Intel Graphics
  • Storage: 2 GB available space
Game details Languages, features & support
Publisher
HexWar Games
Achievements
16
Features
Single-player, Steam Achievements, Steam Trading Cards, Steam Cloud, Family Sharing
Languages
English
Compatibility & accessibility Steam Deck, controllers & access features

Can I Play This?

Steam declarations and Valve's Steam Deck compatibility result. Missing data is shown as unknown, never unsupported.

Sources fresh
Native Steam builds
Windows: unknown
macOS: unknown
Linux: unknown
Steam Deck
unknown
Valve compatibility test
Input
Controller support: unknown
Structured language support (1)
LanguageInterfaceFull audioSubtitles
EnglishYesNoNo
Steam store page fresh · checked 2026-10-09 PCGamingWiki technical notes External link only; SteamIQHQ does not ingest PCGamingWiki content.
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Value Score

Fair Value — 50th percentile.

Price-to-player ratio ranks in the 50th percentile.

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Genre Benchmarks

Player Count Top 63%

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Frequently Asked Questions

Is The Horus Heresy: Battle of Tallarn free to play?
Yes, The Horus Heresy: Battle of Tallarn is free to play on Steam.
What genre is The Horus Heresy: Battle of Tallarn?
The Horus Heresy: Battle of Tallarn is a Strategy game.
Who developed The Horus Heresy: Battle of Tallarn?
The Horus Heresy: Battle of Tallarn was developed by HexWar Games and published by HexWar Games.
What platforms does The Horus Heresy: Battle of Tallarn support?
Available on Steam for Windows, macOS.

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