AFAIK itch allows to place here "fun art" and similar...
What would I do is to leave it here, delete license metadata and place warning/disclaimer in the description. Something like: "UNO design belongs to UNO creators so it is a fun art recreated in pixel art. Using UNO design without their permission is (can be) illegal so be aware and etc" ¯\_(ツ)_/¯