To provide a game changing a story according to a time till a user inputs information by branch progressing the game derived from the time.

An input information/time evaluation means 204 evaluates input information input by the user and also evaluates whether a time counted by a time counting means 201 becomes a set time or not. An input information correspondent processing means 205, when the input/information time evaluation means 204 evaluates the input information input by the user, performs a processing according to the evaluation result of the input information. The time derived processing means 206, when the input information/time evaluation means 204 evaluates to reach the set time, changes the display content of a display device to progress the game and then allows the evaluation of the input information input by the user.