The present invention relates to a computer game, which, when operating on a computer enables a user, via a user's interface, to perform one or more tasks within a virtual environment, the virtual environment comprising a virtual three dimensional dental image of at least one tooth and the tasks performed by the user leading to the improvement of a certain virtual condition associated with said at least one tooth. The three dimensional dental image employed in the computer game is preferably based on or derived from a real life dental environment. The invention further relates to a storage medium for storing data representation of the above computer game and to a method of playing the computer game of the present invention using a computer.