GAME DEVICE AND PROGRAM THEREFOR

PROBLEM TO BE SOLVED: To provide a game device capable of evaluating the game operation of a player and automatically changing the degree of difficulty of game operation in the middle of a game according to the evaluation, and a program therefor. SOLUTION: This game device 1 judges whether a button operation inputted by the player matches with a button operation designated in the game or not at least with respect to timing and kind. The game device 1 judges an operation success when the button operation is matched, and judges an operation mistake when the button operation is not matched. The game device 1 dynamically changes the degree of difficulty related to game operation in the middle of the game according to the degree of operation success or operation mistake.