GAME UNIT

PROBLEM TO BE SOLVED: To provide a game unit for playing a game using game value data, allowing prize exchange using a game value immediately usable for a game even when playing a game, and grasping in real time, the influence of prize exchange on the game value beforehand.SOLUTION: The game unit stores the game value immediately used for a game, as the number of game balls allowed to be shot, subtracts a game value used for a game from the number of game balls allowed to be shot, adds a game value dispensed for a player, subtracts the number of game balls exchanged for a prize as a game value used for prize exchange from the number of game balls allowed to be shot, based on the operation of a display unit 30, updates and stores a current value of the number of game balls allowed to be shot, and calculates the number of game balls allowed to be shot upon exchange as a value obtained by subtracting the number of game balls exchanged for a prize from the number of game balls allowed to be shot, before prize exchange. A display unit 30 updates and displays current values of the number of game balls allowed to be shot, the number of game balls exchanged for a prize, and the number of game balls allowed to be shot upon exchange.