The Hidden Object: Castle Mystery is a free app with a great storyline, and lots of challenging hidden object levels. The story is about a girl named Lily who is forced to move to the castle of her mysterious grandfather. There, she is faced with a series of strange events that lead her to believe that there is something hidden in the castle, and that it is connected with the strange occurrences that happen around the castle.

As the protagonist, Lily is played by the player who can interact with her and the environment, so the storyline is made to be interactive and immersive.

The gameplay is made to be as simple as possible, so that players can enjoy the game and get the most out of it.