Boulder Ball is a 1 vs. 3 mini-game that appears in Mario Party 3. The single player must try and hit the other three players with the boulders to keep the other three players from reaching the top platform. The player could also use the walls to help make the boulders roll at angles that could take out multiple players. If the single player manages to keep the three players from reaching the top platform in time, they wins. The three players must attempt to run up the very steep ramp and reach
Bullet Bill, MarioWiki
Large Circus Ball, MarioWiki
Spiny Shell (blue) - Super Mario Wiki, the Mario encyclopedia
Boulder Ball - Super Mario Wiki, the Mario encyclopedia
Gunk Ball, MarioWiki
Star Ball - Super Mario Wiki, the Mario encyclopedia
Large Circus Ball, MarioWiki
Giant Spiked Ball, MarioWiki
Small Mario - Super Mario Wiki, the Mario encyclopedia
Boulder Ball - Super Mario Wiki, the Mario encyclopedia
Spiny, MarioWiki
Ball Beamer, MarioWiki