Abstract: A system and method for effecting a multiple-arm wager incorporating a plurality of events, such as sporting events, includes accessing a wagering system of the type including a central computer accessible by at least one network terminal interconnected thereto and hosting an executable instruction set for computing intermediate revised odds between a minimum and a maximum as a function of bettor-selected point shades to modify the line applicable to selected individual competing event teams for determining whether the selected teams have won the games for purposes of the wager. The line for each team is individually selectively point-shaded in accordance with the wishes of the bettor, and the betting odds for the wager are calculated as a function of the total number of points shaded for the selected teams.