Bounce 'n' Trounce

Bounce 'n' Trounce is a 4-Player minigame found in Mario Party 3, Mario Party: The Top 100, and Mario Party Superstars.

Gameplay
The game takes place on a midair 3×3 playing field over a pit. The purple starry background has trees and floating stars in Mario Party 3 and The Top 100, and curtains with starry patterns and glowing lights in Superstars. Players on bouncing balls have to knock other players off the platforms by jumping and spin-attacking. Later in the minigame, the square-boxed platforms will fall off one by one. The last player standing wins. In Mario Party 3, if multiple players survive after time runs out, the minigame ends in a draw.

Mario Party 3

 * – Move
 * – Jump
 * → – Attack

Mario Party: The Top 100

 * Move
 * Jump
 * in the air: Spin attack

Mario Party Superstars

 * – Move
 * – Big Jump
 * – During Big Jump: Spin Attack

Mario Party 3

 * Rules – "Get on a bouncing ball, then knock your rivals off the playing field."
 * Advice – "As time passes, the playing field drops away one block at a time. Be careful not to drop away, too."

Mario Party: The Top 100

 * Description – "Ride on the bouncing ball and slam into your rivals to knock them off!"
 * On-screen – "Bounce and slam into your rivals to knock them off!"

Mario Party Superstars

 * "Knock your rivals off the playing field. Do a spin attack to push them farther away!"

Trivia

 * In Mario Party Superstars, it's possible for the player to fall off the stage near the edge after their ball disappears during the winning sequence.