Users need to be stimulated to interact with navigational elements
Show graphical elements that upon mouse-over reveal their meaning
The site you are designing is one where Fun
is more important that a purely Information Seeking
. The site is not information rich but more visual or theme related. Such site can often benefit from elements that invite users to interact more with the site and explore its possibilities.
The graphical elements that have this "minesweeping" behavior must be easily recognizable. In some cases it may help to mark the objects very strong, e.g. by a blinking border or other animation. When the users move their mouse over the object, a label is shown that tells the users more about the item's meaning. Alternatively, the item merely changes shape in order to achieve the same meaning. Clicking on the item is identical to following a normal navigational link.
Although minesweeping actually hides
information from the users, it can be an effective means to attract and stimulate interaction. For some users, especially young users, such stimulation is part of the perceiving something as "being fun". All in all, use this pattern with extreme care!!!