The rules of the game. Sometimes involve random generation of outcomes using dice , cards, etc. The general background knowledge, environment or style of a game. GM Game master. The person that runs a particular game session .
All GMs are volunteers.
A roleplaying system devised by Steve Jackson Games . Harnmaster A fantasy roleplaying system published by Columbia Games. Claims to provide a more realistic and plausible world than other fantasy roleplaying systems. More info at HarnWorld . More info at the Hong Kong Action Theatre site .