Fake Pirate Treasure

During the game, players find a pirate chest with many gold coins made of plastic and one of them made of metal. It seems they can use it in a puzzle that requires one of the coins placed in the specific place (with a Metal sensor). Sadly, all but one coin doesn't work. Players can try every coin (and waste their time), they can try to feel which one is made of metal (it may be tricky), or they can use a gold-sniffing dog toy (with a strong magnet hidden in its nose) to attract the right coin. When the metal coin is placed on the Metal sensor, the UV LED lights chain placed around a map on a wall lights up, showing a hidden X on the map, leading to the next puzzle. Electronics needed: 🔧 Metal sensor, 🧩 Universal puzzle controller, ✨ UV Lights output set