Many ESL (English as a Second Language) or classroom resource sites offer free "Lateral Thinking Riddles" which are essentially the same game. Mobile Apps:
Another angle: sometimes, users might be looking for a game that's similar to Black Stories but free. Maybe there are other horror-themed escape games that offer free PDFs online. I could mention those as alternatives. black+stories+cartas+pdf+free+free
are "morbid, mysterious, and multi-layered" riddles. One player, the Many ESL (English as a Second Language) or