The armor itself isn't heretical, but if you see someone on the battlefield wearing Mk. 5 Power Armor, it's never a good sign ...

A new Warhammer 40,000 tabletop RPG is coming, bringing one of the franchise's most epic stories to life. While Warhammer 40K ...

Warhammer 40k lore draws from literary, historical, religious, and even occult sources, and the many novels go to some weird ...

The Horus Heresy ... using fan-made rules, they aren't currently playable in the game. The second thing to point out is that this is less immediately accessible than 40K. Around about Warhammer ...