Eye of Terror: Reign of Iron – War for the Cadian Gate

Warhammer 40,000 10th Edition

by Games Workshop

Traitor Legions, Renegades, and daemons rampage across the worlds of the Cadian Gate, all waging their own campaigns of butchery and conquest. As the warlords of these armies do battle with isolated Imperial remnants, an infernal intellect looks upon their region with greater ambition. Amidst the spires of the Iron Warrior’s home world, Medrengard, an intricate plan of conquest is pieced together.

Join the War for the Cadian Gate

This explosive expansion for Warhammer 40,000 gives you new ways to play games in the 41st Millennium, including massive-scale Apocalypse games. These books explore the Eye of Terror, what remains of the Cadian Gate, and the brutal wars of conquest waged by the Iron Warriors. Inside the slipcase, you'll find 2 separate books and a booklet, offering something for every type of gamer.

Contents:
– Eye of Terror: Reign of Iron – An 80-page hardcover book featuring lore and background about the Eye of Terror, nearby worlds, the Iron Warriors, the Adeptus Mechanicus forces of Thulia Ghuld, and more.
– Eye of Terror: Reign of Iron – Apocalypse – A 72-page hardcover book with special rules for playing large-scale Apocalypse battles, including new Stratagems for every faction, five missions, and campaign rules.
– Eye of Terror: Reign of Iron – Detachments – A 16-page booklet including new detachments for Chaos Space Marines (Warpstrike Champions and Cult of the Arkifane), Space Marines (Ceramite Sentinels), Chaos Knights (Helhunt Lance), Imperial Knights (Freeblade Company), and the Adeptus Mechanicus (Eradication Cohort).

168 pages, Hardcover

Published April 18, 2026

About the author

Games Workshop Group PLC (often abbreviated as GW) is a British miniature wargaming manufacturing company. Games Workshop is best known as developer and publisher of the tabletop wargames Warhammer, Warhammer 40,000 and The Lord of the Rings Strategy Battle Game.