According to the rules for the One Page Derelict Winter 2021 Jam (specifically under Jam Rules -> License) it states: "Submissions must not include a statement declaring their compatibility with, or design for, a specific rules system."

The product page for this however states: "This game was designed for ROSR but can be used in any game!"

This would technically disqualify the game from the Jam. :-/ Maybe you can remove that passage, just to make sure?