Boulder Ball is a 1-vs-3 player mini-game found in Mario Party 3. Three players have to go up the slope while the other player has to throw boulders down to the players so you can stun them for a while. If one of the three players reach on top of the ball, the three players win. But if the other player mamaged to keep the players from going on top of the slope, the other player wins!
Template:Mario Party 3
