User summary:
The core rules of the game are distributed in a ZIP archive that contains four PDF files:
Rules
Combat
Magic
Threat Encounters Bonus Dice
Generally, these documents include what you would expect from their titles. The Rules document presents character creation and the dice pool mechanic. The game intriguingly collapses a character's performance dice pool with their health status--wounds remove dice from the active pool; healing restores them.
While the design goal of the game was provide a simple, easily-accessible system that sacrifices realism for playability, the actual dice pool mechanic is quite complex and has numerous special-case rules. The Threat Encounters Bonus Dice document provides an additional series of variants to the already complicated dice pool rules.