This eliminates, for example, the separate initiative, hit location and damage rolls common during combat in other systems.
The One-Roll Engine uses a dice pool of d10s equal to the character's Stat and Skill similar to that used by Storyteller system.
If there are no matches, then the player may select a single die to act as a set with a Width of 1.
Powers, such as those possessed by superhuman Talents in Godlike, are modeled with special dice.
(Excess allows offsetting penalties while still resulting in an effective pool of ten.)
In Better Angels instead of their dice pools being based on traditional statblocks, each character has competing traits for various aspects like Knowledge, Generosity, and Honesty on one side and Corruption, Greed, and Cowardice on the other which shift throughout the game based on a character’s actions and personal development.
Monsters does not use Hard Dice, but other special qualities modify rolls in specific, more limited ways.