Enigmarium Online: Nautilus

Overnight, an unusual vessel has appeared out of nowhere in the Gulf of Trieste. Everyone is talking about this futuristic megayacht. Almost a mirage, its slender lines extend high in the sky. Its reflection on the water is practically invisible. The ship’s purpose stirs the imagination: a floating casino, a pirate radio station, a spaceship, a time machine, or a private yacht with lavish and licentious parties hidden from the public eye. Countless rumours circulate about why the ship has appeared right here and now and what is going on there. Rare are those who have managed to go aboard, but none have returned.
Do you dare to unravel her secret?