The Horus Heresy

It is a time of legend.
The galaxy is in flames. The Emperor's glorious vision for humanity is in ruins.
His favoured son, Horus, has turned from his father's light and embraced Chaos.
His armies, the mighty and redoubtable Space Marines, are locked in a brutal civil war.
Once, these ultimate warriors fought side by side as brothers, protecting the galaxy and bringing
mankind back into the Emperor's light. Now they are divided.

Some remain loyal to the Emperor, whilst others have sided with the Warmaster.
Pre-eminent amongst them, the leaders of their thousands- strong Legions are the primarchs.
Magnificent, superhuman beings, they are the crowning achievement of the Emperor's genetic science.
Thrust into battle against one another, victory is uncertain for either side.

Worlds are burning. At Isstvan V, Horus dealt a vicious blow and three loyal Legions were all but destroyed.
War was begun, a conflict that will engulf all mankind in fire. Treachery and betrayal have usurped honour
and nobility. Assassins lurk in every shadow. Armies are gathering. All must choose a side or die.

Horus musters his armada, Terra itself the object of his wrath. Seated upon the Golden Throne,
the Emperor waits for his wayward son to return. But his true enemy is Chaos, a primordial force that seeks
to enslave mankind to its capricious whims.

The screams of the innocent and the pleas of the righteous resound
to the cruel laughter of Dark Gods. Suffering and damnation
await all should the Emperor fail and the war be lost.

The age of knowledge and enlightenment has ended.
The Age of Darkness has begun.

Battles in the Age of Darkness

Set in the 31st Millennium in a time known as The Age of Darkness, The Horus Heresy is the galaxy spanning civil war that tore the Imperium of Man apart and pitched brother against brother. As a Loyalist or Traitor you can fight these cataclysmic battles, and fight for the future of mankind.

Games of Warhammer 40,000 set during The Horus Heresy are played using the Battles in the Age of Darkness expansion. To play you will also need a copy of Warhammer 40,000 The Rules.

Battles in the Age of Darkness is a narrative framework and an expansive series campaigns set in the dark times of the Horus Heresy. It uses its own Allies Matrix and Force Organisation Charts, and presents its own distinct way of playing based on the armies which fought each other for control of the Imperium.

Horus Heresy games tend to be larger than standard games of Warhammer 40,000. Around 1,750-3,500 points per player is an ideal game size. Many players finding that forces of between 2,000 and 2,500 points each offer a satisfying game that can be completed in a single evening or afternoon.

The Horus Heresy: Age of Darkness Rulebook

The Horus Heresy: Age of Darkness is a tabletop game for two or more players, in which you command an army of Forge World and Citadel miniatures representing either those Loyalist forces who fight in the name of the Emperor or the Traitors who have chosen to side with Warmaster Horus. This 216-page hardback book provides you with all of the core rules and diagrams you will need to recreate and fight the wars of The Horus Heresy.

Book I: Betrayal
Book II: Massacre
Book II: Extermination
Book IV: Conquest
Book V: Tempest
Book VI: Retribution
Book VII: Inferno

Campaign Books

The Horus Heresy Campaign Books are a series of books detailing the background of the Horus Heresy, the armies involved and the battle they fought, as well as including the Battles in the Age of Darkness expansion rules, army lists, unit profiles, full campaign systems, missions and more. Each book is leather bound with embossed metal corners and lavishly printed in full colour. We suggest starting with The Horus Heresy Book One - Betrayal.

The Horus Heresy Book I — Betrayal

Night falls on the Golden Age of Humanity. The Great Crusade draws to a close as the treachery of the Emperor’s favourite son is unveiled in blood and destruction on Isstvan III. Choosing this moment to rid the Legions most loyal to him of those in their ranks still dedicated to the Emperor’s service, the Warmaster commences the betrayal forever known as The Horus Heresy.

The Horus Heresy Book II — Massacre

The news of Horus’ rebellion spreads and Space Marine Legions are sent to the Isstvan system to bring the traitors to heel. The true extent of the betrayal is only revealed on Isstvan V, in the grim aftermath of the battle known as the Dropsite Massacre, and the dark deeds leading up to the terrible slaughter.

The Horus Heresy Book III — Extermination

In the aftermath of the bloody Dropsite Massacre on Isstvan V, survivors were hunted with bitter resolve and given no respite. The great betrayal spreads to new battlegrounds, with Alpha Legion’s Invasion of Paramar V and the devastating clash between the Iron Warriors and Imperial fists in The Battle of Phall.

The Horus Heresy Book IV — Conquest

With the strength of half the Space Marine Legions at his hand, the campaign of the Warmaster Horus spreads through the Imperium, bringing treachery and war and leaving destruction in its wake. Adding to the might of the Legions on both sides are the other military forces of the Imperium, from the elite of the Imperial Army – the Solar Auxilia – to the Knight Households and their immense war machines.

The Horus Heresy Book V — Tempest

Previously isolated from the brutal devastation of the Horus Heresy as it tore across the Imperium, the Ultramarines were drawn into Mankind’s civil war when betrayal reached Ultramar. The Word Bearers’ treacherous attack engulfed the entire system, pitching not only the Legions against each other, but also the massed ranks of the Imperial Army militia and the towering god-machines of the Legio Titanicus.

The Horus Heresy Book VI — Retribution

As the fires of total war consume worlds, and whole Legions clash - away from the front lines the Knights-Errant are abroad, carrying out missions bestowed upon them by the very highest authority on distant Terra. The Shattered Legions pursue bloody vengeance against the hated Traitors, and Blackshields - orphaned or outcast Legiones Astartes harbour their own objectives.

The Horus Heresy Book VII — Inferno

The Horus Heresy Book Seven – Inferno is a supplement for The Horus Heresy which depicts the cataclysmic battle of the Burning of Prospero, home planet of the Thousand Sons Legion, the near-destruction of that Legion, the fall of its Primarch, Magnus, and the tangled web of fate and treachery which led up to it. This book includes the rules and background for using the Thousand Sons and Space Wolves Legions in games of The Horus Heresy.

Army Lists

The Horus Heresy Army Lists collect together and update the army lists and unit profiles from across the campaign books. These hardback books are the perfect companion to the campaign books, and an indispensable reference when planning armies and playing games.

The Horus Heresy - Legiones Astartes: Age of Darkness Legions

Legiones Astartes: Age of Darkness Legions includes the unique units and special rules for the thirteen Legions covered so far, including their mighty Primarchs.

The Horus Heresy - Legiones Astartes: Age of Darkness Army List

Legiones Astartes: Age of Darkness Army List covers every unit available to any Space Marine army.

The Horus Heresy - Mechanicum: Taghmata Army List

Mechanicum: Taghmata Army List features the war machines and automata in service of the Mechanicum, including rules for the colossal Warlord Titan.

The Horus Heresy - Crusade Imperialis: Army Lists

Crusade Imperialis: Army Lists features the massed ranks of the Imperial Army, from the militia of a thousand worlds to the elite Solar Auxilia, and also includes the Questoris Knights, and army of devastating war machines.

Choose your Legion

The Space Marines of the Legiones Astartes were created as superhuman warriors to spearhead the Emperor of Mankind's crusade to reclaim the lost worlds of humanity and forge a new empire amongst the stars. Each of the 18 Legions was led by a Primarch, a gene forged son of the Emperor, created to be the wisest counsel, fiercest combatant, and most accomplished general.
Each Legion has its own character and doctrines, and over centuries of battle, under the direction of their Primarch, each has created units unique to their army. Select a Legion below and find out more.