Boulder Ball

Boulder Balls is a 1-vs-3 player minigame found in Mario Party 3.

Gameplay
Three players try to climb a slope while the other player is a machine flinging boulders at them in an attempt to block their path. If squished by a boulder, the squished player is stunned and slides down the hill. If one of the three players reaches the top of the hill, they all win, but if the other player manages to keep the players from going on top of the hill, he/she wins.

Solo (1 player)

 * – Aim boulder
 * – Roll boulder down hill

Group (3 players)

 * – Move

In-game text

 * Game Rules – "Use the machine at the summit to roll boulders down the slope and prevent the other 3 players from climbing up."
 * Advice – "Knocking multiple players down at once is the key. As you're dropping the boulder, try bouncing it off the walls."