Cortex System
A universal system ""toolkit"" book¸ based on the step-die mechanic system used in theSovereign Stonefantasy system¸Serenity RPG¸Battlestar Galactica RPG. Attributes and skills are rated in a a step die system with twelve ranks: d2¸ d4¸ d6¸ d8¸ d10¸ d12¸ d12+d2¸ d12+d4¸ d12+d6¸ d12+d8¸ d12+d10¸ d12+d12. Action resolution is by rolling attribute die plus skill die. Characters have six attributes (Agility¸ Strength¸ Vitality¸ Alertness¸ Intelligence¸ Willpower)¸ along with skills and advantages. It also includes a plot point mechanic. - A description from https://darkshire.net/jhkim/rpg/encyclopedia/ with kind permission of John H. Kim