Abstract: An information supply device including: a communication section that communicates with a plurality of terminal devices; a determination section that determines whether or not the number of intending human players who desire to participate in a multi-player game has reached a setting value; a game calculation section that performs single-player game calculations or multi-player game calculations of the multi-player game; a storage section that stores practice management data that indicates a state of the multi-player game for each of the terminal devices for which the single-player game calculations are performed; an update section that updates the practice management data when the single-player game calculations are performed, and stops updating the practice management data when the multi-player game calculations are started; and an information generation section that generates game calculation result information.