Thank you very much! :)

As far as I know - and as far as I discussed your question with a friend who is an expert on these puzzle sets - there aren't many paper-and-pen games around where figuring out the rules is a puzzle itself. I'm aware only of The Witless by TheGreatEscaper ( https://puzzling.stackexchange.com/questions/47870/witless-a-puzzling-journey ) and FMTC by Jack Lance (https://jacoblance.wordpress.com/2020/05/16/logic-puzzles/ ). There are of course a lot more instructionless puzzles in the video-game format (The Witness, Understand, Taiji ...). I'd love to see more such paper games, so let me know if you find anything else :)