When a game is started, at least two types of pieces obtained based on random extraction from prepared types of pieces are set in advance for each player as his/her own assigned pieces (assigned objects). When the game ends as a prescribed condition is satisfied, an evaluation value of each player is calculated based on a cumulative value at that time point of the assigned pieces set for that player. The assigned piece defines the type of the piece to be evaluated for each player. Here, as a difference between a cumulative value of one assigned piece and a cumulative value of the other assigned piece is greater, a higher evaluation value is calculated. Typically, the difference (absolute value) between the cumulative values of the respective assigned pieces is calculated as the evaluation value.