And then there are devs/games like Nolla/Noita which specifically included a nice little message for data miners which asked them to keep all the gained secrets a secret until a certain date with a reward for both them and the community if they did and who would have guessed: they did! And now they are immortalized inside the games credits!
But stores this information as a metadata file, which gets invalidated when a new file is added/removed from the program muhahaha!