A world map includes multiple regions. Each region includes one or multiple areas. A player causes his/her player character to belong to any nation. As a task given to the player character, a battle with an enemy character is provided on the map of each area (the battle may be waged by a party). When the player character wins the battle in each area, predetermined points are given to a home nation of the player character participating in the battle. The points given to each home nation are totaled for each region, and a nation that dominates each region is decided according to a result of the total points.
Method for advancing network game by group competition