Thank you for taking a moment of your time to leave this comment! It made my day when I saw it :-)
It's not crunchy at all indeed, there's few rules and it was aimed at strong beginners to find creative ways to find and solve a puzzle (how to find a suitable target, how to find out what would be a good gift for them, how to acquire said gift, and how to plant it without leaving a trace..). It was first published in a family-friendly Co-op, so it was more conceived as "empathy/problem solving exercises for kids" :p