Red blood

Blood is a bodily fluid involved in the circulatory system, which carries nutrients to specific locations and carries waste products away. Many of Nosgoth's inhabitants had some kind of Blood. The Blood Curse means many Vampires need to consume blood regularly to survive.

As a series that focuses on Vampires, Blood is featured throughout the Legacy of Kain series and a blood vial represented Kain 's health gauge. Many of the major characters in The Legacy of Kain, as Vampires required blood to survive, this could be fed from in humans by traditional neck biting (seen in Defiance ) or by telekinesis or by drinking from Blood Fountains or Blood Basins.

In Blood Omen, there were four different types of Blood that Kain could consume; Humans and many creatures had Red Blood which topped up Kain's blood vial; Ghosts had Blue Blood which filled Kain's magic energy. Demons and the Dark Eden Mutations had Green Blood, which was poisonous and constantly drained Kain's blood vial - he could cure himself by using Anti-Toxin ; Blood Fountains, once used changed from serving Red Blood to Black Blood, which depleted Kain's blood vial. In later games all creatures that have blood have Red Blood.

Spirit Forges granted artifacts in exchange for a blood sacrifice. Blood was also used to signify injury.