Codex: Space Marines (English)

Games Workshop Codex: Space Marines, the 2026 edition, is an English-language supplement for collecting and playing Space Marines in Warhammer 40,000. This standard edition has 232 pages in a softback binding with a removable slipcase. Its format is 185 × 250 mm; it is distinct from the hardback Collector’s Edition.

Background material is combined with advice on building a themed army, painting and creating a battlefield. The rules section covers army special rules, 15 detachments and 85 unit datasheets. Foldout covers add photography and a view of the Ultramarines fortress monastery. A code inside the back cover unlocks the Space Marines faction in Warhammer 40,000: The App. This product is an English book without miniatures; the game’s core rules are a separate publication.