Short for Drama, Karma, and Fortune, as originally presented in the game Everway? by Jonathan Tweet, and adopted by Ron Edwards in his GNS theory. The terms refer to the resolution mechanics of a given game, which may include any combination or blending of the three. Drama is deciding on the basis of what makes the best story. Fortune is deciding on the basis of a randomizer. Karma is deciding based on the defined character abilities and difficulty.

References:

• System Does Matter