"The mystery of the Castle" is a game to exercise your mental and spatial ability.
It is based on the classic game of dragging boxes to the gaps identified. You can not drag 2 boxes at a time. To complete successfully a screen, you must place all the boxes on the gaps identified.
"The mystery of the Castle" engages much, because often you run into dead ends and you have to start over a screen.

- The level "The entry" is a level of training, to be learning the dynamics of the game in the first 4 rooms. The following 5 rooms, already really require that you exercise your skills.
- The level "The Dark", is unique in that our hero-king has to walk to the dark rooms of the castle with its dimly lit torch.
- Finally, the level "The Hives", is the most difficult, and will cause you can not stop playing "The Mystery of the Castle".

Now you have available the level "The entry", and soon you will go "The Hives" and "The Dark".