UK publisher Cubicle 7 is wading deeper into Warhammer 40K with a new Horus Heresy RPG. Pre-orders open this summer ahead of a 2026 launch for the core rulebook and starter kit. The Horus Heresy, that 30-millennium-spanning civil war where the Emperor's Primarchs turn on each other, is the lore that 40K fans go feral for, and now it gets its first dedicated roleplaying treatment.
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Start organising for freeCubicle 7, based in Nottingham, has form here. The publisher already runs Wrath & Glory for present-day 40K, Imperium Maledictum for the 40,000 Roleplay line, and just announced Warhammer Fantasy Roleplay 5th Edition for the setting's 40th anniversary in late 2026. They know the universe inside out, and they have shown they can build a system that suits both grim Imperial flavour and player-driven storytelling.
The wrinkle that makes this RPG genuinely interesting is the dual-character setup. Each player creates two characters, a primary Consul figure within a Space Marine corps, and a secondary specialist for non-Astartes work. You swap between them depending on the scene, which neatly solves the eternal Heresy problem of how to mix superhuman demigod-marines with the mortal Imperial Army types who share their battlefields. It is a clever piece of design that dodges the 'your character outclasses everyone' trap.
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See how it worksPre-orders open this summer, with the Heresy RPG joining a packed Cubicle 7 release slate alongside Voll Adventures for Imperium Maledictum and the WFRP 5e launch. If your group is looking for something to dive into through the autumn, this is one worth keeping an eye on. Plenty of UK game shops and clubs will be running demo nights once the starter kit hits.
Sources: Cubicle 7 Games | EN World Coverage | Bolter and Chainsword Discussion
