You’ve just moved into your new home—an inheritance from your great-great-uncle Théophraste—and you notice that it’s full of strange occurrences… But what on earth is going on?
You’ll be the one leading the investigation in this scavenger hunt filled with puzzles. Room by room, search your house for clues to finally solve the mystery. It’s a great opportunity to immerse yourself inthe Halloween spirit!
This family mystery game is suitable for children ages 8 and up when accompanied by adults. It can also be played independently by teens ages 13 and up. And, of course, groups of adults are welcome, too!
The game was developed by Atelier Sémaphore, with valuable contributions from Loïc Cattani (GameLab UNIL/EPFL) and Jeremias Kuehne (UNIL).
- Ideal group size: 2 to 5 people, 6 at most
- Duration: 60 to 75 minutes
Book your time slot online now to secure your spot. You can also participate without a reservation, directly on-site, subject to availability.



Share this post
Related news
A Mysterious Halloween Investigation at MSJ
6 October 2026