Could you please clarify what is this game's status under Creative Commons? From this page, it appears licensed under a CC-BY (as it is based on the CC-BY Ironsworn SRD). In the file itself, on the other hand, the attribution text states that it is based on the CC-BY-NC-SA Ironsworn game, while providing no information on the Winsome license itself.
It looks like I either pasted pre-an SRD update or somehow got mixed up, but the files will be amended later today with the SRD's current verbatim plus a clarifier:
This work is based on Ironsworn (found at www.ironswornrpg.com), created by Shawn Tomkin, and licensed for our use under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). The same license applies to Winsome itself.