To provide an advertisement system using a game having a high advertisement effect by using a competitive spirit of a player.

This advertisement providing an advertisement to the player of the game via network NT is provided with an advertisement main terminal A; an advertisement game storage means 1 storing game results of each player for every advertisement game by mutually linking thereto; a game execution means 21 executing a game program according to difficulty based on the game results of each player; an advertisement execution means 22 linking advertisement execution conditions to the game program; an advertisement game providing means 23 providing the game program to a player terminal, a game results registration means 24 registering the game results of each player in the advertisement game storage means; and a game result totaling means 25 totaling the game results of each player in expiring the advertisement game execution time and dividing players to be objects of sending a provision prizes.