A player terminal transmits event generation request information, including current position information, player identification information and event generation request information, to a video game control server via a communication network. A game map is delivered to the player terminal on the basis of a request to obtain the game map from a player terminal. When event generation request information from the player terminal is received, the video game control server determines whether generation of an event is allowed or not by determining whether or not the current position of the player terminal indicated by current position information included in event generation request information is positioned within an event generation area on the game map. The video game control server transmits the event generation allowance information to the player terminal in the case where it is determined that the generation of the event is allowed.