WARRIORS OF MARS, then, gives the reader multiple levels of play. Episodic games — whether based on large battles or individual combats or adventures — can be devised and completed without undue effort or the requirement of lengthy play. Related episodes can be attained simply by devising the background upon which to play them. Campaigns requiring a referee and several participants are generally left to the imaginations of those concerned, remembering that the laws which will govern all are clearly deliniated herein. The rules have been kept to a minimum, the barest necessities required for consistency and clority. We believe that those who use them will be amply capable of whatever expansion and augmentation they require to make their Barsoom an enjoyable place in which to stage their adventures.
– Warriors of Mars introduction