Untold Narrative Options System Reference Document

From the introduction:

Untold Narrative Options is a mechanic pack containing combat and skill check mechanics for Role-Playing Games (RPGs) using a set of hobby dice and a standard UNO card deck.

Combat in this system is designed to be fast-paced, team-oriented, and can last for multiple short rounds of attacks and defense. Skill Checks are designed to drive the plot forward, and set stakes for the player and Game Master (GM) that they agree to before performing the check. This document also includes some alternate rules, optional mechanics, and example skills and items which you could incorporate into a game.