Boulder Ball

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

Gameplay
Three players have to dash up the slope while the other player has to throw boulders down to the players so he can squish them for a while. When squished, the character would slide about halfway down the hill. If one of the three players reaches the top of the hill, they all win. But if the other player managed to keep the players from going on top of the slope, he or 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."