A Daemon Engine or is a piece of machinery that has been corrupted and consumed by [[Chaos]] so that it serves as a type of host body for a demonic entity. Although more than vehicles can be corrupted by Chaos, Daemon Engines are specifically vehicles and, on rare occasions, some types of large mobile weapon such as cannonry. A perfect and common example of a Daemon Engine is the [[Defiler|Chaos Defiler]].

[[Psykers]] stand the best chance at countering these monsters. Their presence and power can reduce the daemons hold on the [[Materium]] and prevent the demon's darkness from attacking others.