Rug Rage

Rug Rage was the 1993 FRC game. It is specifically notable for having a water-filled game object.[1][2]

Official Summary [1]

Contestants attempt to collect balls from either the playing field or their opponents’ goals, place them in their own goals, and defend them. There are five large air-filled kick balls each worth five points, and twenty smaller water-filled balls worth one point each. The winner is the team with the highest total point value of balls within their foal at the conclusion of a two minute match. In the case of a tie, the team with the most large balls wins. If still a tie, the team which collected their balls first wins.