from What This Is:
Swords of Strange Aeons is a rules-light fantasy role-playing game of both high adventure and eldritch weirdness at the tail end of time, as the sun wanes in the final days of Earth.
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All characters are defined by traits. Traits are simply words or short phrases that a re used to define your character by determining what they will be good at doing during actual play.
from The Core Mechanic:
When a character attempts to do something and is opposed by either the environment or another character, they are initiating action. To resolve action, the player who in itiated it rolls 2d12 . One die is light in color and one dark in color. The light die is referred to as the Action Die and represents the effort put forth by
the character initiating the action, while the dark die is the Difficulty Die and represents the opposition to the character who initiated the action.
When rolled, if the Action Die result is equal to or higher than the Difficulty Die result, the player rolling
the dice narrates the outcome of the action. If the Difficulty Die is higher than the Action Die, the player of
the opposing force (oftentimes the GM) narrates the outcome of the action.