Warhammer 40,000: Exterminatus

In this single-issue debut from Boom! Studios, Warhammer 40,000: Exterminatus (2008) drops readers into the grim darkness of the far future, where the Imperium's brutal doctrine of planetary cleansing takes center stage. The issue, a key early entry in the publisher's Warhammer 40,000 line, sets a tone of desperate warfare and moral compromise that would define the franchise's comic adaptations. Though brief, it matters as a focused, explosive introduction to the Exterminatus protocol—the Imperium's ultimate sanction of total annihilation—delivering a concentrated dose of the universe's signature scale and dread.