A secret world, much like the cloud castle you imagined in your youth. After exploring all the locations, more secrets are to be found. At every hour, go to transmission horologe to see what the old man has to say. Listen to the songs in the bottle every day of the week, and one last area will be added to your map. Sail there to reach the end. More an experience than a game, exactly what I was looking for. Beautiful graphics and songs, thumbs up for the creativity. Amazing soundtrack available on iTunes