BoLS logo Tabletop, RPGs & Pop Culture

Horus Heresy: Free Rules Updates For Mechanicum & Astartes

3 Minute Read
Sep 21 2022

There’s a lot of units in the Horus Heresy and not all of them made the cut in to their Liber books. These free rules fix that.

Games Workshop and Forge World have been making miniatures for a long time. Many of the were for the Horus Heresy and got various rules throughout the game. There’s so many units that a few of them slipped through the cracks and didn’t make it in the new Liber books. And if you owned those models you might have been wondering what gives. Well, GW has heard you and they have released some free rules for those legacy models for both the Mechanicum and the Legiones Astartes.

via Warhammer Community


“Following the release of Liber Mechanicum,* we have a selection of Expanded Unit army list entries to accompany it. As with the previously-published Legacies of the Age of Darkness – Legiones Astartes document, these entries allow players with older miniatures, or ones that aren’t really part of the core army, to continue using them. 

The intent with the Expanded Units entries is that they remain a work in progress until such time as we produce new miniatures, or re-release old ones, at which point they will be published in their final “core” form in a book.”

Download Mechanicum Rules Here

Download Legiones Astartes Rules Here


Legion Astartes has a LOT more units…

The Mechanicum doesn’t have quite as many units as the Space Marines but there’s still some classic Mechanicum options listed.  If you have any of these units it’s worth downloading and taking a look. Games Workshop also released a handful of FAQs for the Horus Heresy as well.

Horus Heresy FAQ Page

If you’re playing Horus Heresy at all then you’re going to want to check out your respective army Errata as well as the core rules Errata. The changes aren’t too crazy but it’s still worth taking a closer look at what has changed and been cleaned up a bit.


Get your free rules and FAQ updates!

Author: Adam Harrison
  • Games Workshop Rumor Engine: 'FAN-demonium'