The idea is to make a board game where actual light and darkness matter.
- You turn off all the lights in the room, close the curtains, make sure it’s quite dark.
- The game itself has all these electrical lights included => tea lights (“waxinelichtjes”) most likely
Most of the gameplay is about moving and turning on/off those lights. You traverse some mysterious or dangerous tomb / basement / cave / whatever. Which parts of the map are lit up or visible is a huge part of the game.