Abstract: An online challenge game method determines a winner by comparing a challenger's total game score (TGS1=SGS1+AGS1) which is the sum of a single game score (SGS1) obtained through a terminal of the challenger and an advertisement game score (AGS1) obtained by playing an advertisement game provided during an online challenge with a total game score (TGS2=SGS2+AGS2) which is the sum of a single game score (SGS2) obtained through a terminal of a non-challenger and an advertisement game score (AGS2) obtained by playing an advertisement game provided when the online challenge is accepted.