17 books in series
The Horus Heresy: Primarchs
The Horus Heresy: Primarchs is a 17-book series with 17 released primary works first released in 2015 with contributions by David Annandale, Chris Wraight, Graham McNeill, Guy Haley, Gav Thorpe, Joshua Reynolds, David Guymer, Ian St. Martin, and Mike Brooks.
| #1 |  Roboute Guilliman: Lord of Ultramar
| 3 | 1 read | ||
| #2 |  Leman Russ: The Great Wolf
| 0 | 1 read | ||
| #3 |  Magnus the Red: Master of Prospero
| 3.5 | 2 reads | ||
| #4 |  Perturabo: Hammer of Olympia
| 0 | 0 reads | ||
| #5 |  Lorgar Lorgar: Bearer of the Word
| 0 | 0 reads | ||
| #6 |  Fulgrim: The Palatine Phoenix
| 3.75 | 5 reads | ||
| #7 |  Ferrus Manus: The Gorgon of Medusa
| 0 | 0 reads | ||
| #8 |  Jaghatai Khan: Warhawk of Chogoris
| 0 | 0 reads | ||
| #9 |  Vulkan: Lord of Drakes
| 0 | 0 reads | ||
| #10 |  Corax: Lord of Shadows
| 0 | 0 reads | ||
| #11 |  Angron: Slave of Nuceria
| 0 | 0 reads | ||
| #12 |  Konrad Curze: The Night Haunter
| 3.75 | 2 reads | ||
| #13 |  Lion El'Jonson Lion El'Jonson: Lord of the First
| 4 | 1 read | ||
| #14 |  Alpharius: Head of the Hydra
| 4.5 | 2 reads | ||
| #15 |  Mortarion: The Pale King
| 3 | 1 read | ||
| #16 |  Rogal Dorn: The Emperor's Crusader
| 4 | 1 read | ||
| #17 |  Sanguinius: The Great Angel
| 4 | 1 read |