A server includes an acquisition section that provides a user with information about a virtual event area selected based on acquired current position information and position information linked to the virtual event area, the virtual event area being linked to position information that indicates a position within a predetermined range from an acquired current position, and stores the virtual event area as acquisition information about the user when an acquisition request for the virtual event area has been received, the virtual event area being linked to user identification information, a visit processing section that provides the user with information about the virtual event area having position information that indicates a position within a predetermined range from the acquired current position, based on the acquired current position information and the position information linked to the virtual event area, and receives a visit request, and a parameter calculation section that changes a result value or a predetermined game parameter of the user when a visit request for the virtual event area stored as the acquisition information about the user has been received from another user.