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Only War: Core Rulebook

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Only War: Core Rulebook
Released 2012
Pages 397
ISBN ISBN 9781616614690

General Structure

The Only War Core Rulebook was published in 2012 and contains the core rules for the Only War Warhammer 40,000 role-playing game system. It also contains new and expanded background for worlds in the Spinward Front of the Calixis Sector.



Fantasy Flight Games

  • Designed by Andrew Fischer with additional concepts by Mack Martin and Sam Stewart
  • Lead Developer: Andrew Fischer
  • Writing and Development: Owen Barnes, Max Brooke, Nathan Dowdell, John Dunn, Matthew “HBMC” Eustace, Tim Flanders, Ian Hardin, Andy Hoare, Jason Marker, Mack Martin, Charles May, Brandon Rospond, and Sam Stewart
  • Based on Dark Heresy, Designed by Owen Barnes, Kate Flack, and Mike Mason
  • Editing and Proofreading: Graham Davey, Alex Davy, Matt Harkrader, and David Johnson
  • Graphic Design: Edge Studios, David Ardila with WiL Springer
  • Cover Art: Sam Wood
  • Interior Art: A.L. Ashbaugh, Alberto Bontempi, Matt Bradbury, Sam Burley, Jon Cave, Mauro Dal Bo, Javier G. Ureña, Diego Gisbert Llorens, Zach Graves, Ilich Henriquez, Nikolaus Ingeneri, Michal Ivan, Jason Juta, Anton Kokarev, Mathias Kollros, Sam Lamont, Simon Lissaman, Jorge Maese, Marco, Morte, Sean Andrew Murray, Ameen Naksewee, David Auden Nash, and Mark W. Smith
  • Managing Art Director: Andrew Navaro
  • Art Direction: Andy Christensen
  • Production Management: Eric Knight
  • Licensing and Development Coordinator: Deb Beck
  • Executive Game Designer: Corey Konieczka
  • Executive Producer: Michael Hurley
  • Publisher: Christian T. Petersen

Games Workshop

  • Licensing Manager: John French, Andy Hall, and Owen Rees
  • Head of Licensing: Jon Gillard
  • Head of Licensing, Legal and Strategic Projects: Andy Jones
  • Head of Intellectual Property: Alan Merrett

Publication Details

  • ISBN 9781616614690

RPG Series
Dark Heresy Shattered Hope Edge of Darkness Core Rulebook Game Master's Kit Purge the Unclean Inquisitor's Handbook Disciples of the Dark Gods Creatures Anathema Radical's Handbook Salvation Demands Sacrifice Ascension Heed the Higher Call Blood of Martyrs Heresy Begets Retribution Daemon Hunter Book of Judgement Lathe Worlds The Lathe Worlds, The Lost Dataslate
Haarlock's Legacy Trilogy (Tattered Fates Damned Cities Dead Stars)
Apostasy Gambit Trilogy (Black Sepulchre Church of the Damned Chaos Commandment)
Path to Victory Hive of the Dead Herald of Oblivion
Dark Heresy Second Edition Core Rulebook Game Master's Kit Enemies Within Forgotten Gods Enemies Without Enemies Beyond
Rogue Trader Forsaken Bounty Dark Frontier Core Rulebook Game Master's Kit Secrets of the Expanse Epoch Koronus Drydock Lure of the Expanse Into the Storm Traitor's Nexus Edge of the Abyss Battlefleet Koronus Hostile Acquisitions Koronus Bestiary Soul Reaver (The Dark Kin) Navis Primer Stars of Inequity Faith and Coin Shedding Light Twilight Crusade Tau Character Guide
Warpstorm Adventure Trilogy (Frozen Reaches Citadel of Skulls Fallen Suns)
Deathwatch Core Rulebook Game Master's Kit Know No Fear Emperor Protects Rites of Battle Mark of the Xenos Final Sanction Oblivion's Edge Nemesis Incident Achilus Assault First Founding Jericho Reach Rising Tempest Honour the Chapter The Outer Reach Ark of Lost Souls The Emperor's Chosen Falling Star
Black Crusade Broken Chains Core Rulebook Game Master's Kit Hand of Corruption Tome of Fate Tome of Blood Tome of Excess Tome of Decay Binding Contracts
Only War Eleventh Hour Core Rulebook Game Master's Kit Final Testament Hammer of the Emperor Enemies of the Imperium No Surrender Shield of Humanity Salvaging Solace
Wrath & Glory Blessings Unheralded Core Rulebook Dark Tides Forsaken System Player's Guide Rain of Mercy Redacted Records Wretches of the Writ The Graveyard Shift Core Rulebook (2nd Edition) Threat Assessment: Xenos The Null Hypothesis Departmento Munitorum Shotguns Church of Steel Brass Tax Gutshiva's Kommandos Gamemaster's Screen Affliction Ascendant The Lord of the Spire On the Wings of Valkyries Litanies of the Lost Rain of Mercy Forsaken System Player's Guide
Litanies of the Lost adventures (Grim Harvest Vow of Silence Dark Bidding Duty Beyond Death)
The Tora Armis Insurrection (Bloody Gates On the Wings of Valkyries The Lord of the Spire Affliction Ascendant Starter Set (2023) Redacted Records 2 Aeldari: Inheritance of Embers