To develop a computer system increasing the number of persons accessing to a Web page and perusing the contents of the Web page, allowing an applicant to play a simple game, and giving a prize according to the result of the game.

(1) The computer system is provided with a game selecting icon on the Web page of a deliverer, when a player clicks the game selecting icon, displays a game selecting screen, and when selecting the game, starts the game, and when finishing the game, displays a score and the result of the game, and provides various types of prizes according to the score and the result by the deliverer. (2) The game incorporated in this computer system of (1) is a matching game, the incorporated game is a game expressing a picture to be displayed thereon with characters, and the game displays a pattern in an unfixed position for a predetermined time and makes the player to compete whether or not clicking the displayed pattern within the displayed time.