Horus Heresy: Siege of Cthonia Campaign Book

Games Workshop’s Warhammer prequel/spinoff Horus Heresy—set during the titular heresy where the titular Horus rebelled against the God-Emperor of Man, splitting the Space Marine chapters into traitor and loyalist factions in a brutal civil war—launched a new 2nd edition last year, and is now getting its first Campaign Book. The narrative explores the titular siege of Horus’ own homeworld, as a breakaway group of his chapter, the Thousand Suns, seek to liberate it.