Rolemaster

Rolemaster, p.n. generic tabletop fantasy role-playing system published since 1980 by Iron Crown Enterprises. Often pejoratively referred to as Chartmaster or Rulemaster. [GJ1]
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Addendum: Rolemaster is comprised of four basic "Law" books; the Rolemaster Standard Rules, Arms Law, Spell Law, and Gamemaster Law. The Standard Rules is also available in a simplified volume as Rolemaster Fantasy Role Playing. [GJ1]