D20 System
The current rules are based on the d20 System—a core set of rules which can be (and are) used as the basis for many games. Thus, many d20 games might use the D&D spell list, while others create their own or even replace the entire magic system.
Read more about this topic: Magic Of Dungeons & Dragons
Famous quotes containing the word system:
“The pace of science forces the pace of technique. Theoretical physics forces atomic energy on us; the successful production of the fission bomb forces upon us the manufacture of the hydrogen bomb. We do not choose our problems, we do not choose our products; we are pushed, we are forced—by what? By a system which has no purpose and goal transcending it, and which makes man its appendix.”
—Erich Fromm (1900–1980)