1. A game device for carrying out game processing for every predetermined period of time to thereby update positions of a contact evaluation target object and a contacting candidate object placed in a virtual dimensional space and to display an image showing a picture obtained by viewing the virtual three dimensional space from a predetermined viewpoint, comprising: contact determination means for determining whether or not a predetermined contact condition is satisfied, based on the positions of the contact evaluation target object and the contacting candidate object; contact evaluation point calculation means for calculating, when the contact determination means determines that the predetermined contact condition is satisfied, a contact evaluation point of the contact evaluation target object based on a state of at least one of the contact evaluation target object and the contacting candidate object in the virtual three dimensional space; and contact evaluation point cumulative value storage means for storing a cumulative value of the contact evaluation point calculated by the contact evaluation point calculation means; and game event generation means for generating a predetermined game event in association with the contact evaluation target object with a probability based on the cumulative value of the contact evaluation point stored in the contact evaluation point cumulative value storage means.