PURPOSE: To improve game property by providing a constitution such that prize judgment is carried out plural times in one unit of pattern combination games, and when two patterns are vertically, horizontally, or obliquely coincident to each other, or a prescribed pattern is displayed on a prescribed position, it is reflected to the prize result.

CONSTITUTION: The display of patterns displayed on the game surface having nine picture elements in total by threes each in vertical and horizontal directions of a display part 30 is controlled by a display control part 20. Namely, a pattern combination game operation for changing a plurality of patterns on the game surface according to the game start command by the input of a game medium, and stopping the change of each pattern at a prescribed stop timing is carried out. It is judged by a prize judgment part 40 whether the combination of the patterns displayed on the game surface is coincident to a prescribed prize combination or not. In such a game display unit, the display control part 20 is constituted in such a manner that a new specified game surface is displayed when a specified game condition is established to provide a game having both power and interest.