From website:
Diceconomy which allows three players to competitively control the course of the game’s narrative.
From Runeblade:
Each character has three pools containing different types of dice: white dice, red dice, and black dice.
Each also possesses three descriptive attributes: two are predeterimined - one which define’s the character’s foremost strength, and one which restricts or challenges the character. The third is the ultimate end the player chooses to work toward for their character.