GAME MACHINE, CONTROL METHOD USED FOR THE SAME, AND COMPUTER PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a game machine capable of promoting utilization of a message transmission function even during a game.SOLUTION: A game machine GM functions as one of a plurality of terminals connected via a network 5, and includes a chat function for transmitting and receiving messages mutually among the plurality of terminals via the network 5. Then, the game machine GM causes a change of an increase/decrease in the amount of special effect to be given that is consumed to impart a predetermined privilege relating to a game when predetermined utilization conditions relating to utilization of the chat function are satisfied during the game.