600 EUR
The bookshelf is designed so that books can be tilted away from themselves. The task of the players is to tilt the books in turn, following the hint.
After the players complete the task, a cache will open in the lower part of the shelf.
This puzzle can be changed and reprogrammed based on your task. Possible to open magnetic locks, activate another puzzle, play music, turn the light on/off. Just let us know about it to calculate additional functions.