A game device includes: a first requirement achievement determining unit operative to determine whether or not a requirement of gameplay predefined in a game is achieved based on a progress status of the game; a second requirement achievement determining unit operative to determine whether or not a result of determination by the first requirement achievement determining unit meets a predetermined condition; a display processing unit operative to display information related to the requirement of gameplay determined by the first requirement achievement determining unit as being achieved, and information related to the predetermined condition determined by the second requirement achievement determining unit as being met, where the first requirement achievement determining unit is implemented by game software and the second requirement achievement determining unit is implemented by system software.