Ka is the will of Gan, roughly synonymous with destiny or fate.
Ka has been described as "a wheel [whose] only purpose is to turn."
Ka may be considered to be a guide or a destination, though it is not a strict plan. The machinations of ka can, with effort, be obstructed, though more often than not, ka still wins out in the end. Ka is not necessarily a force of good or evil, as it manipulates the powers of both and seems to have no definitive morality of its own.
Further, ka "signifies life-force, consciousness, duty and destiny. In the vulgate, or low speech, it also means a place to which an individual must go."
Individuals drawn together by the will of ka for a purpose are known as ka-tet.
- "The Gunslinger"
- "The Way Station"
- "The Oracle and the Mountains"
- "The Slow Mutants"
- "The Gunslinger and the Dark Man"
- The Gunslinger
- The Drawing of the Three
- The Waste Lands
- Rose Madder
- Wizard and Glass
- "The Little Sisters of Eluria"
- Wolves of the Calla
- Song of Susannah
- The Dark Tower
- "The Tommyknockers"