Warhammer 40k - Deathwatch - Mark Of The Xenos.pdf ((exclusive)) Jun 2026

The remains the definitive guide to the alien monstrosities lurking in the void between stars. It represents a golden era of 40K RPGs—a time when the focus was on investigation, tactics, and the creeping dread that even a Space Marine can be outmatched by a strange biology.

Before the current 40K lore made the Hurd a massive threat (the "Hrud Migration" in the Siege of Terra books), Mark of the Xenos gave us their RPG stats. The Hrud’s "entropic field" ages flesh and rusts ceramite instantly. The PDF provides a time decay chart —a mechanic rarely seen in 40K games. Warhammer 40K - Deathwatch - Mark Of The Xenos.pdf

You can explore the full guide to the alien threats of the Jericho Reach to enhance your Warhammer 40k roleplaying experience. The remains the definitive guide to the alien

Quick GM checklist before using the book The Hrud’s "entropic field" ages flesh and rusts

To be marked by the xenos is to bear a sign of corruption or contamination, a physical manifestation that one has come into close contact with an alien entity. This mark can take many forms - a tattoo-like discoloration of the skin, an altered psychic aura, or even a genetic modification that subtly alters one's behavior. For a Space Marine of the Deathwatch, such a mark is both a badge of honor and a reminder of the dangers they face.

: Rules for Massed Battles , new Horde traits, and "Turning Points" for high-stakes encounters.