Eye of Terror: Reign of Iron

Eye of Terror: Reign of Iron
Released	April 2026
Preceded by	The Maelstrom: Lair of the Tyrant
Followed by	Armageddon: The Return of Yarrick

Eye of Terror: Reign of Iron is a campaign book set for the 10th Edition of Warhammer 40,000.^[1]

Description

The destruction of Cadia at the height of Abaddon’s 13th Black Crusade brought unimaginable woes upon the Imperium – not least the creation of the Great Rift – but despite the forces of Chaos now surging from the Eye of Terror in great numbers, the Cadian Gate has not truly fallen. Imperial bastions and forge worlds still desperately hold out against the tide, and while they stand, Chaos cannot truly begin its grinding march towards Holy Terra.^[1]

The Daemon Primarch Perturabo’s grand plan for the conquest of the Imperium has taken thousands of years to formulate, and its first step is to bring the Cadian Gate under his complete dominion. Those Imperial worlds that remain there – including the mighty forge world Agripinaa – have been able to hold on until now, but the Iron Warriors must conquer the sector if Perturabo’s plan is to begin in earnest.^[1]

Contents

• Reign of Iron - Lore book^[1]
• Reign of Iron: Apocalypse - Apocalypse rules^[1]
• Reign of Iron: Combat Detachments - new Detachments for Chaos Space Marines, Space Marines, Chaos Knights, Imperial Knights, and the Adeptus Mechanicus, with options for running armies full of Vashtorr’s daemon engines, Freeblade mercenary Knights, cohorts of murderous Skitarii, and more.^[1]

Sources

• 1: Warhammer Community: Eye of Terror – The Reign of Iron Begins (last accessed 3/3/2026)