Game machine and control method thereof

A game control method executed in a game machine which adopts an accumulation-type progressive jackpot with a jackpot payout increasing according to a game play of a player and increases the jackpot payout by a predetermined unit according to a predetermined number of game plays by the player, wherein

• the game control method comprising:
• a fraction managing step which counts the jackpot payout increasing according to the game play of the player by each player as a separate increment and manages a fraction with the separate increment smaller than the predetermined unit in association with the player;
• and
• a fraction display control step which controls a display device which displays a game screen so as to display the fraction.